Apply gentle pressure to the tube so that it bends under its weight. Compliant Industries Group qualified risk & hazard assessors are experienced in a wide range of industries - civil construction, mining, transport, forestry, agriculture and oil & gas industries. strategy to enumerate low numbers of Salmonella in cork borer samples taken from pig carcasses as a first . , Plant Risk Assessment. Baseline Sensitivity and Resistance-Risk Assessment of Phytophthora capsici to Iprovalicarb. 37 Full PDFs related to this paper. Quantitative Risk Assessment of Shigella in Drinking water sources View project. Hold the cork with the help of one hand and the tube with the other. Risks Make sure that the potato is placed on a ceramic tile when using the cork borer - do not cut the potato cylinders towards your hand. Spot the solutions along the starting line of the chromatography paper. Method: 1. A short summary of this paper. Smooth the edges of the jets by heating them on a flame for some time. Using a cork borer and scalpel cut 6 cylinders of 10mm diameter and 1,2 cm length. Two tubes are fitted into the bores. /Type /XObject The Web Site may contain links to other websites on the internet. Make sure the paper does not touch the sides of the tank. In a study on the potential ecological risk assessment of heavy metals in sediment of Baiyangdian Lake, it was found out that cadmium and lead were very high [12]. 101 Words1 Page. A Cork borer sharpener is a separate device used to hone the cutting edge to slice the cork more easily. The glass tube should be rotated to ensure uniform heating while heating. 2. The tubing may break if we did. Cork oak decline is widespread in all its distribution range and seems to be triggered mainly by both mismanagement and unfavorable climatic factors. Adobe d C + "+6.++(:SRB3BMPef`bb`knuruvh} x /Name /im1 Annealing by mild reheating and uniform cooling prevents breakage. Monitoring of pests. Spray both sides of the paper. OTHER HAZARDS: Can anyone be injured or suffer ill-health from exposure to chemicals, toxic gases, or vapors, fumes, dust, noise, vibration, radiation or other factors not mentioned? Improved separation is obtained if the solvent is allowed to equilibrate with the tank atmosphere for one hour. Read Paper. fornicata and Euwallacea nr. A Plant Risk Assessment is required to be completed. When this is done, remove the tube from the flame of the burner. 055 571430 - 339 3425995 [email protected] . Chromatography separates a mixture of solutes in a solution. A sterile 8 mm diameter cork borer was used to make wells in the agar medium for introduction of meat samples. If the cork that we have taken is a rubber one, we can apply some glycerine to the borer. For this purpose, you should be aware of some basic lab techniques that will help you conduct your experiments successfully and avoid any unnecessary accidents. Cork borers to cut potatoes, or potato chipper (Note 1) Measuring cylinder, 50 cm 3. /Height 120 It should be rinsed with concentrated HCl or concentrated HNO. An agar plug was cut with a 5-mm cork borer and transferred from each active culture of P. erythroseptica isolate onto a clarified V8 agar plate. The plates were observed for growth after overnight incubation at 37oC. Take the borer out and reverse the cork when half of the cork has been bored. Charles River Esplanade. the time of exposure to the hazard (as a % of the 24 day or a year) the consequence of exposure to the hazard e.g severity of loss/injury/ illness. 3. Use a cork borer to cut cylinders of fresh beetroot tissue. Aside from our clients, we also value our team. Now, apply some pressure and gently pull the two ends apart. Place the cork as shown in the figure. All the test isolates were incubated . Heavy metals . If the cork that we have taken is a rubber one, we can apply some glycerine to the borer. Valley oak (Quercua lobata)* 22. 11. Introduction . Contact Seller. The smooth plastic handles are stamped with a number designation. As most of these processes involved heating, and hence, knowledge of using a burner is essential. FALLING SLIPPING: Can anyone using the plant or in the vicinity of the plant, slip, trip or fall from heights over 2 meters? . Let us look at the Soda-Lime Glass, it is made by heating soda, silica, and limestone softens readily at about a temperature of 300-400C in the burner flame. Place under UV light to observe fluorescence. It is the responsibility of teachers doing this demonstration to carry out an appropriate risk assessment . In situations where the risk of exposure to infectious materials is unknown or uncertain, and the injury occurred in a biological research area, the injury should be treated as a possible exposure to infectious material and reported immediately to the Associate Biological Safety Officer (353-5679) or contact EHS at 335-8501, so a risk assessment Fornicatus Common name: polyphagous shot hole borer Download Download PDF. Wash and blot dry. Place in distilled water overnight to remove any dye released on preparation. The experiments are not designed for students or inexperienced members of the public to perform without supervision. Risk assessment Table 1: Table showing and explaining risks associated with conducting experiment and how they were controlled Risk Explanation How it was controlled Electrocuti on. Place buffered potato samples into the boiling tube. Each piece was then measured and cut at 2cm using the knife. endobj It is a container in which distilled water is taken for conducting experiments. 55 0 obj <>stream Springfield News Sun Customer Service, What is the name of the pest? View More Specs. 3. The solvent is very volatile and will saturate the air in the tank (equilibration). Column chromatography can be performed on larger molecules which may not be readily introduced into the gas phase. Using a cork borer cut 15 pieces of potato to 3cm long. One tube is bent at an angle of 120 while the other tube is bent at 60. Figure 1. 2. Cuts from chipped test-tube rims. Robot Coupe Hazard: Lacerations Control: These machines may only be operated by persons who have successfully completed training in the Safe Way of Working. They consist of plated tubing with precision ground cutting edges. The two holes are bored similarly as done for a single hole, but we should consider the precaution that the two holes should not be very close to each other. Neither . Risks Make sure that the potato is placed on a ceramic tile when using the cork borer - do not cut the potato cylinders. Risk assessment Slipping on water - Make sure ground is always dry. There are many variations of chromatography, but all involve the dissolution of an analyte into a fluid known as the mobile phase and the passage of this fluid solution across a stationary phase, often a solid or liquid-coated solid. 2. In gas chromatography (GC) the analyte and mobile phase must both be gases or be readily introduced into the gas phase by heating. Beetroot Core Practical Risk Assessment Risk 1: Cutting yourself with cork borer We did not do this step of the experiment however for people who are doing this step, using the cork borer, due to it being a sharp object, there is a risk of cutting yourself. 5-6 mm is a good size. Then use the scalpel, ruler and white tile to cut to the same length. Additional Information Interested in this product? They produce an open flame and burn at a high temperature. A sterile 4 mm cork borer was used to make holes in each of the fruits. Air adjusting disc: This is a metallic ring that fits on the lower side of the burner tube. 2) Spray with oxine (8-hydroxyquinoline - 0.5 g in 80:20 ethanol:water). Get Latest Price from the seller Contact Seller Product Image Company Details Make a hole (a heated cork borer is an ideal tool for this) in the base of a 2 litre drinks bottle ca. Key words: cold hardiness, exotic invasive species, goldspotted oak borer, mortality agent, MaxEnt, spread . ENTANGLEMENT: Can anyones hair clothing, gloves, necktie, jewelry, cleaning brushes, rags and other materials become entangled with moving parts of plant or materials in motion? /ColorSpace /DeviceRGB On the other hand, because of the increased viscosity of liquids compared with gases, liquid chromatography can be a more ponderous process. Blackcurrant squash, at a concentration of 556 g dm-3 sucrose: Ribena is ideal, 1 litre is enough for 9 working groups. Let us discuss how the process goes through. Spot two samples for the minewater, one with a single addition of solution and one with multiple additions. Neither . High. @xcZPmPc)bQi7 l~MW4Xp7S]g5@Dq9!-a~P4| :ya-kUGQ A cork borer can also be used to punch holes on an agar plate and perform well diffusion assays to study bioactivity in microbiology. For the ten . Instead of temperature gradients, a gradient in the composition of the liquid phase can be used to separate components. Perform the same with the end of the tube that is to be used. H-13550 Glass Tubing Cutter . ?$HdtEP!c4W.8/&tI*jn Technician's list of equipment needed 0.1 M, 0.5 M, 1 M, 1.5 M, 2 M hydrochloric acid Agar powder . Different substances will then move through at different rates, ideally resulting in distinctly identifiable retention times for each substance. hU[oH+J3 U|iZ: Vanderbilt Heme Onc Fellowship, St Martha Roman Catholic Church Father Dave, chambers funeral home bessemer, al obituaries. Risk assessment is the determination of level or magnitude of risk having regard to: the frequency/chance of any given hazard manifesting itself the time of exposure to the hazard (as a % of the 24 day or a year) the consequence of exposure to the hazard e.g severity of loss/injury/ illness Each core was cut to approximately 2 grams. Accetta luso dei cookie per continuare la navigazione. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . Using the technique of Chuaysrinule et al. %%EOF Examples of inert gases are helium and nitrogen gas. /Width 152 was cut from each filter with a number 6 cork borer and prepared for TEM analysis via the Zumwalde-Dement procedure outlined in NIOSH Publication Number 77-204. For the class - prepared by technician/ teacher. Emerald ash borer ( Agrilus planipennis ). Slaughterhousesampling (2) 22 Human fecalsampling Full PDF Package Download Full PDF Package. Using a cork borer cut 15 pieces of potato to 3cm long. Take care when handling cork borer, scalpel and water baths. 0 We did not do this step of the experiment however for people who are doing, this step, using the cork borer, due to it being a sharp object, there is a risk of, cutting yourself. 36 Full PDFs related to this paper. Bt corn, a genetically modified organism (GMO), has been both the poster-child and thorn-in-the-side of the plant biotechnology industry from the late 1990's to present. Download Download PDF. $3.50. HIGH PRESSURE FLUID: Can anyone come into contact with fluids under high pressure? Hold it with both hands and place it on the flame of the burner. Teat pipettes, 2. - Health & Safety information and model risk assessments. (cork borer) A B C C B Air sampling A: Sampling head B: PVC tube C: Pump Air sampling After singeing. Alcohol is highly flammable. Press it gently to make the tube coplanar. RISK EVALUATION LOW Some risk of chemical hazard and injury exists but this could be minimised by adhering to correct procedure. These principles . Page 1 of 22 Rapid Pest Risk Analysis (PRA) for Polyphagous Shot Hole Borer (Euwallacea sp.) Set of 6 borers, 4-12 mm. Wash the cylinders thoroughly to get rid of the pigment that has come out of the broken cells; Add one beetroot cylinder to each of the eight tubes and leave them in the water baths; Shake the tubes once. Then, agar plates are incubated under suitable conditions depending upon the test microorganism. 3. (ii) Lubricate the cork borer with glycerine. For the class - prepared by technician/ teacher. For Use With (Application) To bore holes in corks and Rubber stoppers. For the standards, use multiple additions to create 5mm spots. These lab techniques include lighting a bunsen burner, boring a cork, cutting a glass tube, bending a glass tube, cleaning a glass apparatus, and drawing a glass jet. Page 1 of 22 Rapid Pest Risk Analysis (PRA) for Polyphagous Shot Hole Borer (Euwallacea sp.) Dispose of used sharps in a proper, safe container, eg a sturdy box, clearly labelled, and sealed and wrapped before disposal. . Uses of cork borer? 9mm Cork borer Cutting board Marking tape Tweezers Stirring rod 4.3 Method 1. Use a cork borer to cut out six potato chips and cut down the sections into identically sized chips using a ruler and scalpel. 3. Pest risk analysts face the daunting challenge of forecasting the potential Other common names: oak buprestid beetle, two spotted oak borer, metallic beetle, oak jewel beetle . You will see that it will soon become flexible. What are some basic lab techniques that students should know? The novelty of the approach is in the short pre-enrichment step, where for most bacteria, growth is in the log phase. Place on a tile and cut into 30 discs, each 3mm wide. Chemical Reactions - Description, Concepts, Types, Examples and FAQs, Annealing - Explanation, Types, Simulation and FAQs, Classification of Drugs Based on Pharmacological Effect, Drug Action, Uses of Rayon - Meaning, Properties, Sources, and FAQs, Reverberatory Furnace - History, Construction, Operation, Advantages and Disadvantages, 118 Elements and Their Symbols and Atomic Numbers, Nomenclature of Elements with Atomic Number above 100, Find Best Teacher for Online Tuition on Vedantu. Uncontrolled and unwanted fires in the Northeast and Midwest have long posed a threat not only to the forest itself, but also to the lives and communities on the wildland urban interface. Pre-seeded nutrient agar plates with bacteria were used and wells of 8 mm diameter were made using sterile cork borer. with cork borer or pipette, cut a core of mycelium;(if the centre of the colony is producing spores, remove the inoculum from the edge of the colony). Open out the paper. . Materials used were sterile ziplocks, cork borer, pH paper, thermometer, measuring tape and the flame atomic absorption spectrophotometer (Varian Model 55B) for . This will help you obtain two jets. If they are in a small volume to begin with, it does not take much movement to separate the mixture. (Coleoptera, Curculionidae: Scolytinae) also referred to as Euwallacea aff. Inexpensive sets used to bore holes in corks and rubber stoppers. This temperature can be reached by either cooling, via the use of ice, or by heating, via the use of a Bunsen burner.4. endstream endobj startxref This gap in knowledge critically limits identification of at-risk patients and treatment once arrhythmias become manifest. word ladder answer key in my room / pillars of eternity aloth spells / pillars of eternity aloth spells 5. Once the cork gets flexible, press it in a cork presser, which is a mechanical device. cork test tube, small (~75 x 8 mm), borosilicate ("pyrex") Potential hazards Breakage of test tubes. Cut eight beetroot cylinders using a cork borer. To separate them, we can use paper chromatography. (iii) Select and lubricate the next largest cork borer and slide it over the first from the other side until it has passed through the rubber stopper. Keep away from naked flames and ignition sources. Take care when handling cork borer, scalpel and water baths. Care must be taken when using the scalpel. Part of this safety process requires a plant risk & hazard assessment of the POST HOLE BORER to be carried out, identifying the risks & hazards associated with its operation. What is the name of the pest? a !1AQa"q2B#$Rb34rC%Scs5&DTdEt6UeuF'Vfv7GWgw(8HXhx )9IYiy Assessing the risks What are the details of the activity to be undertaken? Set of 12 borers, 4-19 mm. acorns aeration deficit agrifolia areas bark black oak blue oak borer branches brown California black oak California native oaks California oak cause coast live oak compaction conks cork oak Costello crown damage deciduous decline deficit injury defoliation diameter dieback disease . Leave to dry. When the chromatography paper is ready, suspend it inside the boiling tube by pinning it to the underside of the bung or by trapping it in a split bung. This risk assessment only covers basic laboratory work Any significant hazards involved in the work activity must also be assessed in more detail using one of the more specialised generic, or specific, risk assessments available on the wiki. As the chromatogram develops (l-r) the two components of the mixture separate. A novel strategy to obtain quantitative data for modelling: Combined enrichment and real-time PCR for enumeration of salmonellae from pig carcasses #5396237; cork oak (Quercussuber) L. - William M. Ciesla, Forest Health Management International . This gap in knowledge critically limits identification of at-risk patients and treatment once arrhythmias become manifest. Carry sharps with the blade or point protected, eg in a shallow tray, and do not carry them at all if you are likely to be jostled. All cylinders should be cut into six discs of approximately equal thickness (2mm). 5mm. Detergents are the normal means of cleaning glassware. Keep the smaller end on the table and the bigger end facing up. Read Paper. Place the cylinder, spotted end down, into the tank. If you wish to attempt the experiments, ensure that you have completed a legally adequate risk assessment beforehand and that you work within the constraints of the risk assessment. `S___x CCR 7. Gideon I Ogu. Variables- Independent variable: substrate concentration: 0%, 25%, 50%, 75% and 100% of hydrogen Download Download PDF. To learn the basic techniques on boring a cork and fitting the glass tubes. Then using a scalpel, cut 7, 1 cm long, cylinders. The areas covered in the comprehensive POST HOLE BORER risk and hazard report are: 1. What Does Popeyes Fry Their Chicken In, Cork Oak (Quecus suber) 21. This research was conducted to investigate the assessments of fungal pathogens associated with orange fruit spoilage sold in five markets in Benin metropolis and the . Re-measure the length and mass of each cylinder of potato, recording your measurements in the table. Wash the cylinders thoroughly to get rid of the pigment that has come out of the broken cells; Add one beetroot cylinder to each of the eight tubes and leave them in the water baths; Shake the tubes once. Weigh each before the start of the experiment. Consider obtaining parental permission. Place in distilled water overnight to remove any dye released on preparation. Liquid chromatography fractions are often analysed through spectrophotometric techniques, notably UV-visible spectroscopy. On the other hand, prescribed fire plays an important role in maintaining and restoring the health and . Then, hold the tube close to the wet end and insert it into the cork's borehole using a rotatory motion. Human health risk assessment indices such as HQ, CDI and CR - use cork borer to cut 6 identically-sized cylinders of potato, blotting to remove excess water - one in each solution and wait for 20 min - calculate % change calibration curve plotting change in mass against conc of sucrose solution risk assessment broken glass, scalpel Sets found in the same folder Required practical 1 10 terms strawbscherry Other suitable bacteria include e.g. Catalog #: 3458. . Cork Borers, Set of 6, 5 mm - 11 mm. and Fusarium Dieback (Fusarium euwallaceae)STAGE 1: INITIATION 1. 3. Compliant Industries Group hazard and risk assessors are experienced on the plant and will go through every aspect of your POST HOLE BORER in a thorough proce Chromatography involves the physical separation of a mixture of compounds. The milk and the enzyme may be contaminated and shouldn [t be consumed. We provide you year-long structured coaching classes for CBSE and ICSE Board & JEE and NEET entrance exam preparation at affordable tuition fees, with an exclusive session for clearing doubts, ensuring that neither you nor the topics remain unattended. three freckles in a row meaning. ,!+bVV}o=EyYFl1:A%ET [0^glDk }q_7n44u";UB. Continue heating the tube till it softens completely. The variables controlled during the experiment are: the volume of bathing water in each tube (10 cm3) the surface area and volume of the beetroot cylinders (dependent on size of cork borer; 1 or 2 cm in length) Make sure there is no skin on the potato cylinders. 23mm, 9. The milk and the enzyme may be contaminated and shouldn [t be consumed. While the water is reaching the desired temperature, get potato and bore out a cylinder with cork borer. Standard handling procedures Inspect and discard any damaged test tubes. Ensure the bottle is dry. DP, HOD, HOC, HOSES) approval prior to conducting this activity is required. Raw beetroot, size 4 cork borer, white tile, knife, ruler, beaker, forceps, water baths, boiling tubes, thermometer, colorimeter & cuvettes, stop clock, distilled water, syringe Method Using cork borer and knife, cut pieces of beetroot into 1 cm length cylinders. H-9672.XX Cork Borer Sets with Handles, Plated Steel Set. The risk rating (high, medium or low) indicates the level of response required to be taken when designing the action plan. rudy francisco rifle analysis / ford employee profit sharing 2022 / cork borer risk assessment. When separation with GC or LC is performed in tandem with mass spectrometry (the "hypenated" techniques of GC-MS and LC-MS), masses of individual fractions is rapidly determined. Keep rotating the tube to ensure uniform heating. For most procedures, a flat-bottom flask of volume equal to 500 ml is taken. 36 0 obj <>/Filter/FlateDecode/ID[<433303F730654F3916B865AB4218C2DE>]/Index[22 34]/Info 21 0 R/Length 84/Prev 116069/Root 23 0 R/Size 56/Type/XRef/W[1 3 1]>>stream Cork borer (used to cut agar cylinders to fit in boiling tubes e.g. Technician's list of equipment needed 0.1 M, 0.5 M, 1 M, 1.5 M, 2 M hydrochloric acid Agar powder . 5. 2. - Health & Safety information and model risk assessments. When spiral or helical milling. Often a time-varying temperature gradient, from lower temperature to higher temperature, is applied to the tube. Fornicatus Common name: polyphagous shot hole borer Measure 10cm^3 of the 1.0M salt solution (NaCl) and transfer to the first boiling tube and label it RP3: Steps 5 - 8 5. There is a risk of . the time of exposure to the hazard (as a % of the 24 day or a year) the consequence of exposure to the hazard e.g severity of loss/injury/ illness. POST HOLE BORER..Ph..0475 217 533..Risk and Hazard Assessment is the identification of risks and hazards associated with the POST HOLE BORER. 6. was cut from each filter with a number 6 cork borer and prepared for TEM analysis via the Zumwalde-Dement procedure outlined in NIOSH Publication Number 77-204. Get 250cm3 beaker and fill with water to about the 150cm3 mark with water at a specific temperature. endobj Inexpensive sets used to bore holes in corks and rubber stoppers. Junho 11, 2022; real estate practice final exam . . If you do not have access to this device, simply wrap the cork in a piece of paper and press it under your shoe. 104 0 obj <>stream Cut the chromatogram into two and treat the two halves as follows. z=b}+c PK ! A.C.2.2 AIM: Investigating the effect of Different concentration of Sucrose on Osmosis in potato chips. The methodology has . Using a cork borer and scalpel cut 6 cylinders of 10mm diameter and 1,2 cm length. Notes 1. Jul 3, 2022; fotomontajes de amor para dos personas; Comments: pete walker complex ptsd website; the risk of kidney stones (Honow et al., 2003), possess . Accurately measure and record the length and mass of each cylinder. cork borer risk assessment. Quantitative Risk Assessment of Shigella in Drinking water sources View project. OvQNT!; Znn$ab(w cL|h ~H|vs}'=:Ay!B~8K0brS:AyND#s&0CJ9mHjr! Replacement Borer Set for Humboldt Boring Machine. A short summary of this paper. Stouthamer Identification of shot hole borers and determination of the species of Euwallacea affecting avocados in CA 11/1/12 - 10/31/14 . Wash these thoroughly with water until the water running off is no longer red and dry gently with a paper towel; in cork borer samples taken from pig carcasses as a first concept and proof of 31 principle for a new sensitive and rapid quantification methodbased on combined enrichment and The materials that are needed for this experiment includes seven plastic cups, a marker, a rod, a razor blade, a cork borer, an electronic scale, a small graduated cylinder, a paper towel, a potato tuber, and sucrose solutions of different molarity. Measure out 25ml of 6% Hydrogen-peroxide (H2O2) 7. This puts you at risk of burning yourself, and also burning other students around you. The analyte is dissolved in a quick-drying solvent and spotted near the bottom of the plate. Apply gentle pressure so that the tube breaks smoothly without leaving any jarred edges. It threatens all American Fraxinus and nearly 100 species of ash-specialized herbivores. It is the responsibility of centres to carry out risk assessments for all practical investigations. Cut eight beetroot cylinders using the cork borer. REPORT ANY DEFECTS TO MANAGEMENT ASAP ENSURE ELECTRICAL CONNECTIONS ARE NOT EXPOSED DO NOT USE THE MACHINE IF DEFECTS ARE IDENTIFIED ONLY TRAINED, COMPETENT AND AUTHORISED PERSONS ARE ABLE TO USE. Mark the solvent front with a pencil. This process ensures the easy insertion of the tube into the cork. Different types of sample analysis would require the use of a different type of detectors. It is required for making U-shaped tubes and other such delivery tubes. RISK ASSESSMENT EcoSolve High School Written by: Phillip Crisp Commenced on: 20 Feb 2018 Expires: 20 May 2019 Making hydrogen . The middle portion should ideally come out to be about 2 mm. 0 If under 18 they must meet the requirements laid out in the Young Persons Risk Assessment. We can get accurate results if the glass apparatus is properly cleaned before it is used. Inquire for Price. Place a potato chip in each test tube (one per sucrose concentration) and leave for 20 minutes. Fiber counting and sizing were performed at a magnification of 10,000X. JRE "+/:JQEw>pm!hp-W]_($vxfeVFck_hW%xbgOKyEb-Xo5NBXo2tq)#G8a $LR '~G"x|_J(S$f|yy pS;y_$*H>I1`> s^ N%OD1/0>i:$As[@Lp[4MswCCUBCkj)1p9, pPVm1|_MkwY? bRZ 4,w?+#{sX:H#"{ N1o1oGmwg. (It is assumed that these will be thermostatically controlled heated or cooled systems with or without a mechanical shaking facility and with or without a water circulating system, and operating within the range 1 - 95 o C). Make sure there is no skin on the potato cylinders. /Filter /DCTDecode size 6) Boiling tubes RISK ASSESSMENT FORM DESCRIPTION OF THE JOB OR MAIN ACTIVITY Use of water-baths. Size 2 Cork borer; Knife ; Ruler ; White Tile; Plastic beaker approximately 250cm ; Forceps; Water baths at temperatures 10*C, 40*C and 60*C; Boiling Tube rack; 3 Boiling Tubes; Thermometer (one per water bath) Colorimeter; 4 Cuvettes; Stopwatch ; Distilled Water; Pipette to accurately measure amount; Small measuring cylinders ; Water proof . 12 potato cores were cut on to the cutting board using a cork borer 9mm in width. Also, .