Canfort Laboratory and Education Supplies Co., Ltd. - SiteMap

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Products Category

Pipette
Balance
Centrifuge
Microscope
Spectrophotometer
Refractometer
Lab glassware
Laboratory plastic ware
Lab crucible and lab ceramics
General labware
Indicator Paper
Human skeleton models
Cleaning machine
Measuring tools
Teaching Instruments
Magnetic stirrer
Other lab equipment
Other lab products

Products List

Indicator paper pH 1-14 - TP001 | Glass tubing cutter for laboratory use - FJ-001 | Three finger clamp (big) - FJ-002 | Cork Stand, flask stands - FJ-003 | Boss head clamp (chromeplated) - FJ-004 | Plastic Test tube rack - FJ-005 | Flask clamp (galvanized) - FJ-006 | Micro spoon and spatula - FJ-007 | Die-cast bosshead (chromed) - FJ-008 | Plastic keck clips - FJ-009 | Retort ring - FJ-010 | Universal Lab clamp, Flask clamps - FJ-011 | Spherical Joint Pinch Clamp - FJ-012 | Aluminum titration clamps, Burette Clamp - FJ-013 | Retort stand (medium) - FJ-014 | Stainless steel keck clips - FJ-015 | Special indicator paper pH0.5-5.0 - TP008-1 | Special indicator paper pH 1.4-3.0 - TP008-2 | Special indicator paper pH 2.7-4.7 - TP008-3 | Special indicator paper pH 3.8-5.4 - TP008-4 | Special indicator paper pH 5.4-7.0 - TP008-5 | Special indicator paper pH 5.5-9.0 - TP008-6 | Special indicator paper pH 6.4-8.0 - TP008-7 | Special indicator paper pH 7.6-8.5 - TP008-8 | Special indicator paper pH 8.2-10 - TP008-9 | Special indicator paper pH 9.5-13 - TP008-10 | Qualitative filter paper (7cm) - TP002-1 | Qualitative filter paper (9cm) - TP002-2 | Qualitative filter paper (11cm) - TP002-3 | Qualitative filter paper (12.5cm) - TP002-4 | Qualitative filter paper (15cm) - TP002-5 | Qualitative filter paper (18cm) - TP002-6 | Quantitative filter paper (7cm) - TP006-1 | Quantitative filter paper (9cm) - TP006-2 | Quantitative filter paper (11cm) - TP006-3 | Ashless quantitative filter paper (12.5cm) - TP006-4 | Ash-free quantitative filter paper (15cm) - TP006-5 | 18cm quantitative filter paper, ashless - TP006-6 | Congo red paper - TP012 | Red litmus paper - TP004 | Curcumin test paper - TP005 | Litmus paper blue - TP010 | phenolphthalein paper - TP011 | Starch iodide paper - TP013 | Lead acetate paper - TP014 | Cobalt chloride test paper - TP015 | Absorbent paper - TP017 | Binocular biological Microscopes BM2000 - MS001 | Binocular biological Microscopes BM2000 - MS002 | Binocular biological motorized Auto-Focus Microscope BM5000AT - MS003 | Seidentopf Binocular Viewing Head biological Microscopes XD-202 - MS004 | 1800X Biological Microscope XSP-24N - MS005 | Binocular Viewing Head Biological Microscope XSP-24N 201 - MS006 | Binocular Viewing Head Biological Microscope N-300M - MS007 | Cost-effective Monocular Biological Microscope AS1 - MS008 | 640X Biological Microscope XSP-102 For Student - MS009 | 1000X Student Biological Microscope XSP-103 - MS010 | High scalability sharp image easy operation Biological Microscope N-200M - MS011 | Wide Field Eyepiece Binocular advance Biological Microscope N-400M - MS012 | 1500X Student Microscope XSP-105 - MS013 | Low form glass beaker, with lip and graduation - LG001 | Tall form, with lip and graduation, BEAKER, boro 3.3 - LG002 | Conical Beaker with lip, boro 3.3 - LG003 | FLAT BOTTOM FLASKS, narrow neck, with beaded rim, boro 3.3 - LG004 | Church Distilling Flasks - LG005 | BOILING FLASK, long neck, boro 3.3 - LG006 | ROUND BOTTOM FLASKS, boiling flask, norrow neck, boro 3.3 - LG007 | ERLENMEYER FLASKS, narrow mouth, boro 3.3 - LG008 | CONICAL FLASK, ground-in glass stopper, boro 3.3 - LG009 | IODINE FLASK, ground-in glass stopper, boro 3.3 - LG010 | DISTILLING FLASK, with side tube, boro 3.3 - LG011 | Claisen distillation flask - LG012 | Glass Retort with Glass Stopper - LG013 | EVAPORATING DISH, flat bottom, with spout - LG014 | EVAPORATING DISH, round bottom, with spout - LG015 | CRYSTALLIZING DISH, with spout, boro 3.3 - LG016 | Life Size Spine Model With Pelvis - HM001 | Small Male Pelvic Girdle Five Lumbar Spine Model - HM002 | 170cm Disarticulated Skeleton Model - HM003 | Life Size Foot Joints Model with Ligament - HM004 | Human Skeleton Model with Half Muscle Coloring (170cm) - HM005 | Life Size Human Skull Model With Muscle Coloring - HM006 | Life Size Human Skull Model with Marks - HM007 | Cervical Spine and Occipital Bone Model - HM008 | Hand joints model - HM009 | Human Skeleton Model with Stand (45cm) - HM010 | 170cm Deluxe Human Skeleton Model - HM011 | Life size Hand joints model (with ligament) - HM012 | Natural Size Hip Joint Model - HM013 | Human skeleton model with nerve (85cm) - HM014 | Natural Size Shoulder Joint Model With Ligament - HM015 | Small Size Human Skull Model - HM016 | Conical alumina ceramic crucible - GG001 | Cylindrical alumina crucible, corundum crucible - GG002 | Gold crucible - GG003 | 99.99% Silver Crucible With Lid - GG004 | Platinum crucible - GG005 | Iridium crucible - GG006 | Molybdenum crucible - GG007 | Mini Electric Centrifuge for lab - LX001 | Electric centrifuge 80-1 - LX002 | Electric centrifuge model 80-2 - LX003 | 22.5L 500W Ultrasonic Cleaner model 12YD - CS001 | 3L/5L 120W Ultrasonic Cleaner model 120D - CS002 | 10L 300W Ultrasonic Cleaner model 5200 - CS003 | Watch glass, soda glass - LG017 | Soda lime glass petri dishes - LG018 | Distilling tube plain - LG019 | Distilling tube with one bulb - LG020 | Distilling tube with two bulbs - LG021 | Distilling tube with three bulbs - LG022 | Distilling tube - LG023 | Air Condenser, Glass Air Condenser - LG024 | Liebig Condenser, Straight Condenser - LG025 | Allihn Condenser, Glass Condenser - LG026 | Graham Condenser, Glass Condenser - LG027 | Adapter tube,straight - LG028 | Adapter tube,bent - LG029 | Connection tube, T shape - LG030 | Connection tube, Y shape - LG031 | Connection tube, U shape - LG032 | Test tube, without rim, bacteriological use - LG033 | Test tube, with screw cap (bakelite), round bottom - LG034 | Test tube, with rim, for chemistry - LG035 | Test tube, with rim, with side tube - LG036 | Centrifuge tube, conical, graduated - LG037 | Melting point tube - LG039 | Centrifuge tube, conical - LG038 | Melting point tube, curved - LG040 | Fermentation tube, graduated, on glass foot - LG042 | Fermentation tube, on glass foot - LG041 | PTFE stopcock, straight bore - LG043 | GLASS KEY STOPCOCOK, straight - LG044 | PTFE KEY STOPCOCOK, straight - LG045 | STOPCOCK, T-shaped,three-way - LG046 | Stopcock, oblique bore, two way - LG047 | Stopcock, oblique bore, three-way - LG048 | Stopcock, cross-shaped, four-way - LG049 | Stopcock, with curved outlet - LG050 | Female Pelvic Cavity and Pelvic Floor Muscle Model - HM017 | Human skeleton model (170cm) - HM018 | Natural size lower limb model - HM019 | Natural size Thoracic spine model - HM020 | Life Size Female Pelvis - HM021 | Natural size spine model (with coccyx) - HM022 | Life Size Male Pelvis Model - HM023 | Natural size head-simulator - HM024 | Natural size skull partition coloring model - HM025 | Natural size Vertebra model(2 pcs) - HM026 | Natural size Vertebra model(3 pcs) - HM027 | Natural size Foot joint model - HM028 | Natural size Pelvic model (with two vertebra) - HM029 | Natural size skull model (with vertebra) - HM030 | Small size vertebra and tailbone model - HM031 | Natural size skull and cerebral artery model - HM032 | Acrylic Circular Pipette Stand - FJ016 | Four finger clamp, lab claw clamp - FJ017 | Flask clamp (sprayed) - FJ018 | Plastic flask stand, flask base - FJ019 | Three finger clamp (two locks) - FJ020 | Lab jack 20x20cm, stainless steel - FJ021 | Three finger clamp (small) - FJ022 | Educational low price 3D printer model C14 - ET001 | Educational entry 3D printer model C203 - ET002 | High efficient 3D printer Model C2048 - ET003 | High efficient 3D printer Model Model C3145 - ET004 | Stainless Steel Lab Spoons - FJ023 | Stainless Steel Lab Spatula - FJ024 | Cork borers set for laboratory - FJ025 | Square boss head clamps - FJ026 | Beaker tong, beaker clamp - FJ027 | Lab claw clamp with bosshead - FJ028 | Chain clamps for laboratory - FJ029 | Stainless Steel forceps - FJ030 | Bunsen burner - FJ031 | Marble titration stand, burette stand - FJ032 | Universal bosshead clamp, Square Boss Head - FJ033 | Stainless Steel Lab clamp, Flask clamps - FJ034 | Bosshead clamp, Cross clamp (sprayed) - FJ035 | Mohr's Tubing Clip, Tubing Clips - FJ036 | Funnel stand, funnel holder - FJ037 | Lab clamps, Bosshead clamp (big) - FJ038 | Hoffman clips, tubing clips (plated) - FJ039 | Laboratory drying rack, draining racks - FJ040 | 15x15cm lab jack, stainless steel - FJ041 | Micro Bunsen Burner - FJ042 | Aluminum test-tube rack - FJ043 | Tripod retort stand, retort stand base - FJ044 | Aluminum lab jack, 15x15 cm - FJ045 | Boss Head Clamp, rotation - FJ046 | FILTER PUMP - LG051 | GLASS STIRRER - LG052 | Weighing bottle, high form - LG053 | Weighing bottle, low form - LG054 | GAS WASHING BOTTLE, boro 3.3 - LG055 | GAS WASHING BOTTLE, Boro 3.3, B - LG056 | DRYING TUBE, straight with one bulb - LG057 | DRYING TUBE, straight, with two bulbs - LG058 | DRYING TUBE, U-shape, plain - LG059 | DRYING TUBE, U-shape, with side tubes - LG060 | DRYING TUBE, U-shape, with side tubes and ground-in stopper - LG061 | Kjeldahl trap, bulb - LG062 | Kjeldahl trap, cylindrical - LG063 | Desiccator, with porcelain plate - LG064 | Amber desiccator with porcelain plate - LG065 | Vacuum desiccator - LG066 | Amber vacuum desiccator - LG067 | Gas generator - LG068 | Glass bell jars - LG069 | Glass bell jars with stopper - LG070 | DC Ammeter J0407 - MT001 | DC Ammeter J0407 (flat) - MT002 | AC Milliammeter J0414 - MT003 | DC Microammeter J0415 - MT004 | Sensitive Galvanometer J0409 - MT005 | DC Voltmeter J0408 - MT006 | DC Voltmeter J0408 (flat) - MT007 | Projection Ammeter J01460 - MT008 | Projection Voltmeter J01461 - MT009 | Projection Current Detector J01465 - MT010 | PTFE valves - PW001 | PTFE stirring Bar - PW002 | PTFE stirring bar plug - PW003 | PTFE tweezers - PW004 | PTFE funnel - PW005 | PTFE volumetric flask - PW006 | PTFE Teflon Crucible - PW007 | PTFE reagent bottle - PW008 | PTFE stir bar retriever - PW009 | PTFE centrifuge tube - PW010 | PTFE reaction kettle lining - PW011 | PTFE magnetic stir bar Model A - PW012 | PTFE magnetic stir bar Model B - PW013 | PTFE magnetic stir bar Model C - PW014 | PTFE beaker - PW015 | PTFE colorimetric tube - PW016 | PTFE measuring cylinder - PW017 | PTFE watch glass - PW018 | PTFE digestion pot - PW019 | PP measuring cup - PW020 | PP wash bottle (red) - PW021 | PP volumetric flask - PW022 | PP wash bottle - PW023 | PP funnel - PW024 | PP drop bottle - PW025 | PTFE test tube - PW026 | PTFE evaporating dish - PW027 | PTFE petri dish - PW028 | PTFE ball - PW029 | PTFE hose tube - PW030 | Test tube plug - PW031 | Test tube plug (with sand core) - PW032 | Conical flask plug (with sand core) - PW033 | Automatic lab glassware cleaning machine model 120 - CS004 | Automatic lab glassware cleaning machine model 200 - CS005 | Automatic lab glassware cleaning machine model 220A - CS006 | Automatic lab glassware cleaning machine model 220 - CS007 | Automatic lab glassware cleaning machine model 320 - CS008 | Automatic lab glassware cleaning machine model 420 - CS009 | Magnetic stirrer with hotplate Model 78-1 - MA001 | Magnetic stirrer Model 78-2 (Bidirection) - MA002 | Heating Magnetic stirrer Model 79-1 - MA003 | Heating Magnetic stirrer Model 79-2 (Bidirection) - MA004 | Magnetic stirrer with digital display Model 85-2 - MA005 | Magnetic stirrer Model SH-2 with high quality - MA006 | Magnetic stirrer Model SH-3 with 500W hotplate - MA007 | Pen-type acidity meter model 8 - PM001 | Pen-type acidity meter model 10 - PM002 | Precision acidity meter model 2C - PM003 | Precision acidity meter model 2F - PM004 | Precision acidity meter model 3B - PM005 | Precision acidity meter model 3C - PM006 | Digital acidity meter model 25 - PM007 | Precision conductivity meter model 11A - CM001 | Precision conductivity meter model 11C - CM002 | Precision conductivity meter model 11D - CM003 | Portable conductivity meter model 6200 - CM004 | Precision conductivity meter model 12A - CM005 | Precision conductivity meter model 12D - CM006 | Precision conductivity meter model 307 - CM007 | Digital sodium ion densimeter model 51 - IM001 | Fluorescence Spectrophotometer model F93/F93A - SP001 | Fluorescence Spectrophotometer model F96Pro - SP002 | Fluorescence Spectrophotometer model F96S - SP003 | Fluorescence Spectrophotometer model F97 - SP004 | Fluorescence Spectrophotometer model F98 - SP005 | Visible spectrophotometer model 721S - SP006 | Visible spectrophotometer model 722S - SP007 | Visible spectrophotometer model 722SP - SP008 | Visible spectrophotometer model 723S - SP009 | UV-Vis Spectrophotometer 752S - SP010 | UV-Vis Spectrophotometer 752Pro - SP011 | UV-Vis Spectrophotometer 756S - SP012 | UV-Vis Spectrophotometer 759S - SP013 | Visible spectrophotometer model S22PC - SP014 | Visible spectrophotometer model S23A - SP015 | UV-Vis Spectrophotometer model UV1901 - SP016 | UV-Vis Spectrophotometer model UV1902 - SP017 | Analytical balance model FA - BL001 | Laboratory precision balance, model JJ - BL002 | Precision balance for laboratory, Model JA - BL003 | Laboratory electronic balance, Model JY - BL004 | Electronic balance, model JEB - BL005 | Electronic balance, Model JEA - BL006 | Lab electronic balance, model JE - BL007 | Electronic counting scale model JSK - BL008 | Static Water Mechanics Balance, hydrostatic balance - BL009 | Moisture analyzer, Moisture tester - BL010 | Tray balance model JPT - BL011 | Bar magnet - ET005 | U-shaped magnet - ET006 | Annulus magnet - ET007 | Triangle magnet - ET008 | Heart-shaped magnet - ET009 | Arrowhead magnet - ET010 | Pentagon magnet - ET011 | Low form porcelain crucible - GG008 | Porcelain crucible, medium form - GG009 | Porcelain crucible, high form - GG010 | Porcelain Gooch crucible, Gooch filter - GG011 | Volatile Matter Crucible - GG012 | Porcelain Tight crucible - GG013 | Porcelain Double layer Crucible - GG014 | Unglazed crucible - GG015 | Porcelain Roga Crucible, Roga Index Crucible - GG016 | Porcelain crucible rack - GG017 | Porcelain infrared carbon sulfur crucible - GG018 | Porcelain buchner funnel - GG019 | Porcelain ash dish - GG020 | Porcelain evaporating dish with handle - GG021 | Porcelain Hemispherical evaporating dish - GG022 | Porcelain mortar and pestle - GG023 | Porcelain combustion boat - GG024 | Porcelain spatula - GG025 | Porcelain colorimetric plate - GG026 | Acid-proof stoneware - GG027 | Corundum combustion boat - GG028 | Alumina mortar and pestle - GG029 | 200X Kids Microscope - MS014 | Stereo Microscope SZM0745T - MS015 | Hand tool 0-150mm/0-6in Vernier Caliper for Student/Education/General Application - CP001 | Laboratory glassware with quick delivery - LG1 | Customized laboratory glassware - LG2 | Factory supply laboratory glassware with best quality - LG4 | Metal Digital Caliper - CP002 | Stainless Steel 0-150mm/0-6in Digital Caliper for Student/Education/General Application - CP003 | High precision 0-150mm/0-6in Digital Caliper for Student/Education/General Application - CP004 | Hand Tool Alloy Compass/Scribing Compass/Marking Gauge/Surface Gauge - CP005 | Measuring Tool Depth Calipers 0-150mm, 0-200mm, 0-300mm - CP006 | Outside diameter micrometer - CP007 | Hand tool angle square, try square with seat - CP008 | Kjeldahl method, Kjeldahl Nitrogen Analysis - LG071 | Glass Filtering Apparatus, filtration apparatus - LG072 | Kipps apparatus, gas generator - LG073 | Test Tubes Without Rim, Boro3.3, Borosilicate Glass - LG074 | Borosilicate glass petri dishes - LG075 | Glass Mortar and Pestle - LG076 | Adjustable 8/12 Multichannel Pipette - PTM001 | 1000 types hot sell lab glassware - LG3 | High Accuracy Single Channel Quantitative Pipette - PTA | High accuracy adjustable single channel pipette - PTB | Hot sale single channel quantitative pipette - PTC | Hot sale adjustable Single Channel Pipette - PTD | Low price single channel quantitative pipette - PTE | Low price adjustable single channel pipette - PTF | Accurate sterile adjustable pipette with lock - PTG | Pipette Rack, Pipette Holder - PT-R | Pipette Tips - PTT | LDPE Plastic Transfer Pipettes, Pasteur Pipet - PTP | Disposable Plastic Transfer Pipettes, Pasteur Pipet - PTP001 | Sterilized individually wrapped plastic transfer pipettes - PTP002 | Microscope slide, glass slide - LG077 | Cover Slip/Coverslip/cover glass/microscopic glass - LG078 | Hemocytometer, counting chamber - LG079 | Buret, Glass burette with PTFE Stopcock - LG080 | 80mm/100mm Cheap ABS Plastic Vernier Caliper - CP009 | High Quality Digital Plastic Vernier Caliper - CP010 | Brix Refractometer 0-10% - RF001 | Hand-Held Brix Refractometer 0-20% - RF002 | Portable Brix meter 0-32% - RF003 | Brix Meters, Refractometers 0-50% - RF004 | Brix Meter Refractometer 28-62% - RF005 | Portable Refractometer 0-80% with good quality - RF006 | Brix Refractometer 0-90% with best prices - RF007 | Sliding rheostat, slide rheostat - ET012 | Single blade switch - ET013 | Double throw switch - ET014 | Connecting wires - ET015 | Spring dynamometer - ET016 | Triangular prism, Dispersive prism - ET017 | Electrometer, Kolbe electrometer - ET018 | Leaf electrometer - ET019 | Tuning fork - ET020 | Stationery Sets, School Supplies Stationery - ET012-1 | Clock model for teaching - ET021 | Teaching Model, Fruits Model - ET022 | Teaching Model, Vegetables Model - ET023 | Magnetic whiteboard - ET024 | Drawing Board, Paint Board - ET025 | Pulley Block, Tackle Block - ET026 | Geometric Model, Geometry Model - ET027 | Pinhole Camera Model, Pinhole Imaging - ET028 | Magdeburg Hemispheres - ET029 | Demonstration of Cone Volume - ET030 | Demonstration of Geometric Figures Area - ET031 | Geometric Model, Geometric Framework Model - ET032 | Sun Moon Earth Model - ET033 | Earth Structure Model - ET034 | Solar System Model - ET035 | Primary Secondary Coil, Electromagnetic Induction - ET036 | Mini transparent electronic calculator - ET037 | 12 Digits Desktop Electronic Calculator CT512 - ET038 | Scientific Calculator 82MS-B for teaching - ET039 | 2 Channels Stopwatch XL-013 - ET040 | Atomic Model, Molecular Model Sets for Teaching - ET041 | Triple Beam Balance 2610g - BL012 | 13cm Barometer - ET044 | Barometer Thermometer Hygrometer 3in1 - ET045 | 10cm Thermohygrometer (Thermometer Hygrometer) - ET043 | Scientific Calculator Fx991es Plus - ET046 | HIPS plastic weighing boat - PW034 | Wire gauze with ceramic center - FJ047 | Wooden Test tube rack - FJ-005-1 | Aluminum Test tube rack - FJ-005-2 | Stainless steel test tube rack - FJ-005-3 | Big sheet square filter paper - FJ048 | 44 Pipettes Circular Pipette Stand - FJ049 | Glass alcohol burner - FJ050 | Glass distilling apparatus - LG081 | Laboratory iron tripod - FJ051 | Chromatographic column - LG082 | Disposal medical waste bag - FJ052 | Abbe refractometer - RF008 | Screw cap reagent bottle - LG083 | Laboratory water bath - LE008 | Coplin Staining Jar - LG084 | Plastic measuring cylinders, embossed graduation - PW035 | Professional Binocular Biological Microscope 40X-1600X XSZ-107BN - MS016 | The Dean Stark apparatus, Clevenger apparatus - LG085 | Pocket digital electronic balance - BL013 | Mechanical double beam balance - BL014 | Life size Hand joints model - HM012B | Vacuum filter flask set, Filtering Kit - LG086 | Vacuum Filter Flask,Buchner Filter Flask - LG087 | Retort stand (Big) - FJ-014B | PS plastic test tube - PW036 | Weighing paper - TP018 | Rubber Pipet Filler, pipette filler - FJ053 | Hoffman clips, tubing clips (brass) - FJ039B | Teaching Circuit board - ET047 | Life-size skull model with stand, colored - HM033 | G clamps - ET048 | Torsion Dynamometer - ET048 | Weighing bottle - LG088 | PVC World Globes - ET049 | Magnetic stirrer with thermal control Model 85-2A - MA005-1 | Cheap Magnetic Mixer Model HJ-1 - MA008 | Glass Graduated Cylinder, Measuring Cylinder - LG089 | Glass Conical Measure - LG090 | Nickel Crucible with Lid - GG030 | Nickel-Chromium Crucible Rack - GG031 | Graduated cylinder, measuring cylinder with stopper - LG089-1 | Glass buret, Base Burette - LG091-1 | Glass Acid Burette, Straight Bore - LG091-2 | Plastic measuring cylinders, blue line graduation - PW035-1 | Plastic measuring flask, PP volumetric flask - PW037 | Lens Cleaning Tissue, Lens Cleaning Paper - TP019 | Glass Volumetric Pipette, Bulb Pipette (Class A) - LG092-1 | Bulb Pipette (Class B), Volumetric Pipette - LG092-2 | Unisex White Medical Lab Coats - Lab coats | Stainless Steel Alcohol Lamp,Alcohol Burner - FJ054 | Prepared Microscope Slide Kit - ET050 | Student Stationery, Plastic Ruler Set - ET051 | Manual Hand Mechanical Tally Counter - ET052 |

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News List

The usage of indicator paper. | Some tips to usage and routine maintenance of lab glassware | Promotional Event- Student microscope XPS-02 XPS-05 | Brief description to pH indicator paper | A widely lab glassware - glass beaker | Some tips for using a vernier caliper | What is Spring dynamometer and how a Spring dynamometer works | Brief description to slide rheostat (sliding rheostat) | Magnetic stirrer and Magnetic stir bar | Mortar and pestle | What are disposal medical waste bag used for | Some tips for Using the an Abbe Refractometer | Triple Beam Balance & Double Beam Balance, which one to choose |