Latest erlenmeyer flasks Tenders | Government erlenmeyer flasks Tenders

State Government

CTN :40878055

08 Jul, 2025 6.00 Lacs

Gadchiroli - Maharashtra

Tender For name of work : procurement of various scientific equipments under pm-usha at gondwana university gadchiroli (second time) - rotary evaporator- rotary vacuum evaporator borosilicate glass model number: rv 10 auto pro rt to 210oc

corporations/Associations/Others

CTN :40878069

09 Jul, 2025 28.28 Lacs

Bhandara - Maharashtra

Tender For m&r to pwss at hingna, bhandara, kalmeshwar, gondia, umred... supply of spares for chlorinators & annual maintenance contract for chlorinators... - chlorinator, servicing and overhauling of job chlorinators for a period of one year including a) every month visit for periodical maintenance of chlorinators, checking them for proper functioning and routine checkup including minor consumables required. b) attending breakdown calls if any apart from the routine regular monthly visits., supply of spares for chlorinators and related piping system as under:-, (technical sanction no 137123secn for august2023 ) filter made from schedule 80, a106, grade b, carbon steel, (technical sanction no 137123secn for august2023 ) ejector body., (technical sanction no 137123secn for august2023 ) ejector diaphragm assembly, (technical sanction no 137123secn for august2023 ) needle valve, (technical sanction no 137123secn for august2023 ) actuator for diaphragm type pressuregauge, (technical sanction no 137123secn for august2023 ) inlet valve spring made of hastelloy, (technical sanction no 137123secn for august2023 ) vacuum regulator ptfe diaphragm assembly., ((technical sanction no 137123secn for august2023 ) nrv for vacuum tubing with suitable connectors.., (technical sanction no 137123secn for august2023 ) 3/8* 18g, pvc coated copper tube with stub enf and brass nut-6 feet long, (technical sanction no 137123secn for august2023 ) o ring set / gasket set, (technical sanction no 137123secn for august2023 ) ejector inlet adaptor & rotameter outlet adaptor with nut, (technical sanction no 137123secn for august2023 ) inlet and outlet piping set with fitting like unions, valves etc complete, (technical sanction no 137123secn for august2023 ) filter elbow and tee, (technical sanction no 137123secn for august2023 ) diaphragm type ss pressure gauge, (technical sanction no 137123secn for august2023 ) inlet water ss pressure gauge with tee and adaptor., (technical sanction no 137123secn for august2023 ) filter to regulator copper tube with stub end and brass nut, (technical sanction no 137123secn for august2023 ) borosilicate glass tube with teflon float., (technical sanction no 137123secn for august2023 ) inlet ventur, (technical sanction no 137123secn for august2023 ) outlet venturi, (technical sanction no 137123secn for august2023 ) inlet valve body, cap and pin., supply of yoke clamp & tonner key, providing , erecting & commissioning of chlorinetrap made of 100 mm dia seamless steel pipe with chlorine control valve with mounting plate & necessary hardware to mount on wall/frame with necessary copper pipe etc complete, providing, erecting, commissioning of new vacuum type floor mounted chlorinatorof 5 kg/hr capacity including-filter unit made ofschedule 80a 106 grade b carbon steel, -inlet copper tube with stub end and brass nut length 2 mtrs-filter vacuum copper tube with stub end & brass nut, inlet valve assembly having ptfe seat and hastelloy spring, -vacuum regulator with ptfe diaphragm assembly pvc front and back body,. rotameter made out of pvc with borosilicate tube teflon float and flow control valve spindle made of pvc, -pvc tubing with nuts form vacuum regulator to rotameter., ejector assembly containing ejector block of pvc venturiset nrv gas nrv water drain and inlet water gauge, -vacuum tubing, fiber board with angle set, chlorine pressure, inlet /outlet pipingwith isolation valves up to as required length withfoundation along with all required accessories complete, supplying, erecting, testing and commissioning ofminimum three & above star rated centrifugal water pump (monoblock), 415 v, threephase, 50 hz, a.c. supply of 3.75 kw/5 hp with discharge 715/200 lpm for head of 17/39 m and 65 mm suction/50 mm delivery pipe on provided cc foundation as per specification no. wp-cgp., supplying & erecting d.o.l starter suitable for 415 v, 3 phase 50 cycles with no volt coil and overload element with necessary mater

CTN :40862914

03 Jul, 2025 NA

Kanchipuram - Tamil Nadu

Tender For servicing of laboratory equipment - digital polarimeter / saacharimeter. make : anton paar., model : mcps300 sucromat. other : wave lenght : 589 nm.., digital refratometer. make : anton paar., model : abbemat300. other : 589.3 nm, digitla weighing machine. make : shimadzu., model : atx-224-r, others : cap: 220 g, double distillation unit. make : infusil., model : es-2000-ddq-xl-bg., borosilicate glass., others : cap : 2 litr/hr., photo electric colorimeter. make : systronics., model : 115 (micro controller), others : display: led 3/5 digits., digital microscope. make : optika., model : b-293 trincular., others: trincular microscope.

State Government

CTN :40841890

18 Jul, 2025 NA

Kamrup - Assam

Tender For supply and installation of laboratory equipment experimental setup for fyimp ug practical classes at the department of physics, gauhati university - laboratory equipments/experiment set ups, experiment name: to verify the law of malus for plane polarised lighttechnical specifcations:i. light source: - led: 532 nm or 635 nm ( 2 nm stability), 1 5 mw adjustable output. - unpolarized (extinction ratio >500:1). - collimated beam (divergence 0.5 mrad); qty-1ii. polarizers- glan-thompson or polymer film. - extinction ratio 10 :1 @ operating wavelength.- mounted in 50 mm rotation holders.; qty-2iii. rotation stage- motorized analyzer rotation (0.05 resolution). - accuracy: 0.1 . - range: 0 360 (continuous).; qty-1iv. photodetector- silicon photodiode (400 1100 nm). - linearity: r 0.999 (0.1 w 5 mw).- digital readout: 0.1 w resolution.; qty-1v. optical bench-- anodized rail ( 60 cm) with kinematic mounts. - vibration-damping feet.; qty-1, experiment name: to determine thespecific rotation of sugar solution using polarimetertechnical requirementsa.core instrumenti. light source- - sodium d-line (589.3 nm) or tunable led ( 2 nm stability). - output stability: 0.2% drift/hour.ii. polarizer/analyzer- glan-thompson prisms or high-grade polymer film. - extinction ratio 10,000:1 at 589 nm.iii. rotation stage- motorized with 0.001 resolution.- accuracy: 0.005 .- range: -90 to +90 .iv. sample cell-- borosilicate glass tubes with precision ground ends. - path lengths: 0.5 dm, 1.0 dm, 2.0 dm ( 0.01 dm tolerance). - temperature-controlled jacket (5 50 c 0.1 c).v. detector- photomultiplier tube (pmt) or low-noise photodiode. - linearity: r 0.999 over 0.1 w 5 mw rangevi. enclosure- light-tight with vibration damping. - internal black anodized surfaces.b.measurement specificationsi. specific rotation: range: -180 to +180 resolution: 0.001 accuracy: 0.01 ii. concentration-range: 0.01 0.5 g/ml (sucrose in water) detection limit: 0.001 g/mliii. temperature control-stability: 0.1 c at 20 c (standard condition), experiment name: to determine the wavelength and velocity of ultrasonic waves in a liquid (kerosene oil, xylene, etc.) by studying the diffraction through ultrasonic gratinga.core componentsi. ultrasonic generator- - frequency range: 1 10 mhz ( 0.1% stability). - adjustable output: 0 50 w. - digital display (resolution: 0.01 mhz).ii. transducer- piezoelectric (pzt) crystal, resonant at 2 5 mhz. - liquid-coupled design for efficient energy transferiii. liquid cell- optical glass (low thermal expansion). - dimensions: 100 50 50 mm (l w h). - sealed with quartz windows.iv. light source- he-ne laser (632.8 nm, 2 mw) or sodium lamp (589.3 nm). - beam collimation: 0.5 mrad divergence.v. optical system- adjustable slit (10 500 m). - collimating lens (f = 150 mm, 50 mm). - precision rotation stage for detector (0.01 resolution).vi. detection system- photodiode/pmt detector with linear response (400 800 nm). - traveling microscope (0.01 mm resolution) or ccd camera ( 5 mp).b.measurement specificationsi.wavelength ( )range: 0.1 2 mm, resolution: 0.001 mm, accuracy: 1%ii. velocity (v)range: 800 2000 m/s (liquids) resolution: 1 m/s accuracy: 2%iii. diffraction angles- measurement range: 30 resolution: 0.01 , experiment name: to verify the stefans law of radiation and to determine stefan s constanta.core componentsi.black body radiator- cavity-type design (emissivity 0.99). - material: nickel-plated copper.- operating range: 50 c 600 c. - aperture diameter: 10 mm 0.1 mm.ii. heating system- pid-controlled furnace (0 600 c). - stability: 0.5 c at 300 c. - power: 500 w (ac 230v).iii. temperature sensor- type k thermocouple or pt100 rtd. - accuracy: 0.5 c at 500 c (nist-traceable).iv. radiation detector- thermopile sensor (spectral range: 0.3 20 m). - responsivity: 10 v/w.- active area: 10 10 mm .v optical path. - water-cooled collimating tube with baffles.- adjustable aperture to define solid angleb.measurement specificationsi. temperature range100 c 500 c (reso

CTN :40812481

14 Jul, 2025 NA

Kalyani - West Bengal

Tender For supply of chemicals - streptavidin , single channel variable volume micropipette , borosilicate glass beaker 250 ml , borosilicate glass beaker 500 ml , stainless steel micro spatulas 6 inches , borosilicate petridish 100 mm , di water , ethanol lab grade , acetone , phosphoric acid

Central Government / Public Sector

CTN :40793560

11 Jul, 2025 27.79 Lacs

Hyderabad-T - Telangana

Tender For supply of ar grade and pack size of 500 g , toluene with ar grade and pack size of 1 ltr , zinc sulphate hepta hydrate with ar grade and pack size of 500 g , extran or labolene or equivalent soap solution for glassware cleaning neutral with ar grade and pack size of 5 ltrs , acetic acid glacial with ar grade and pack size of 500 ml , acetonitrile with ar grade and pack size of 2.5 l , di-sodium hydrogen citrate sesqui hydrate c12h18na4o17 with ar grade and pack size of 500 g , diethylene glycol with ar grade and pack size of 1 ltr , dichloromethane with ar grade and pack size of 2.5 ltr , sodium chloride with ar grade and pack size of 1 kg , sodium sulphate anhydrous with ar grade and pack size of 1 kg , trihydrate sodium acetate with ar grade and pack size of 500 g , trisodium citrate with ar grade and pack size of 500 g , magnesium sulphate anhydrous pesticide residues analysis, grater than equal to 98.0 percent complexometric with residue grade and pack size of 1 kg , primary secondary amine psa with residue grade and pack size of 100 g , acetic acid with hplc grade and pack size of 500 ml , acetone with hplc grade and pack size of 1 ltr , acetonitrile with hplc grade and pack size of 2.5 ltrs , ammonium acetate with ulc lcms grade and pack size of 50 gms , carbon tetrachloride with hplc grade and pack size of 500 ml , chloroform with hplc grade and pack size of 1 ltr , methanol with hplc grade and pack size of 2.5 ltrs , methanol with ulc lcms grade and pack size of 4 ltrs , formic acid with ulc lcms grade and pack size of 100 ml , n hexane for gc ms and pack size of 2.5 ltrs , n hexane with hplc grade and pack size of 2.5 ltrs , isopropanol with hplc grade and pack size of 2.5 ltrs , iso octane with hplc grade and pack size of 2.5 l , n- pentane with hplc grade and pack size of 1 ltr , tetrachloroethylene with spectro grade and pack size of 1 ltr , tetrahydrofuran with hplc grade and pack size of 500 ml , 1,4 di oxane with hplc grade and pack size of 1 ltr , water with hplc grade and pack size of 1 ltr , beaker with spout -glass -1000 ml with pack size of 1 per pkt , beaker with spout -glass -250 ml and pack size of 1 per pkt , beaker with spout -glass -100 ml and pack size of 1 per pkt , beaker with spout -glass -50 ml and pack size of 1 per pkt , conical flask with stopered - 250 ml and pack size of 1 per pkt , conical flask with stopered -100 ml and pack size of 1 per pkt , calcium chloride drying tube -cone size 19 26, curved with an angle of 75 degree and pack size of 1 per pkt , glass syringe for filtration -5 ml- and pack size of 1 per pkt , funnel long stem -glass -100 mm dia and pack size of 1 per pkt , funnel long stem -glass -75 mm dia and pack size of 1 per pkt , glass droppers with rubber holder -15 cm and pack size of 1 per pkt , glass vials bottles -transparent 30 ml, borosilicate, screw caps ptfe and pack size of 100 per pkt , glass vials bottles -amber colour- 30 ml, borosilicate, screw caps ptfe and pack size of 100 per pkt , reagent glass bottle with screw caps with inner ptfe seal 250 ml with inner ptfe seal borosilicate and pack size of 1 per pkt , pipette graduated -mohr type, glass with calibration certificate -2 ml, class a- and pack size of 1 per pkt , pipette bulb glass with calibration certificate -20 ml, class a- and pack size of 1 per pkt , reaction flask, round bottom, two necks angled at 35degree to vertical -centre, 24 29 side neck 19 26- -500 ml borosilicate and pack size of 1 per pkt , reaction flask two necked the side neck with provision to connect to gas rubber tubing of 8mm dia angled at 35 degree to vertical centre neck with 24 29 250 ml borosilicate , separating funnel -straight bore with ptfe stopcock, with borosilicate //bid details 2 / 94 glass stopper 2000 ml neck size 29 32 and pack size of 1 per pkt , separating funnel -straight bore with ptfe stopcock, with borosilicate glass stopper 1000 ml and pack size of 1 per pkt , volumetric flasks with interchangable glass stoppers, wi

CTN :40796616

10 Jul, 2025 NA

Goa - Goa

Tender For supply of with ventilated safety cap , scale plastic 12 inch long superior quality , scale steel 12 inch long superior quality , self stick pad small yellow repositional notes with best quality adhesive for reposition of stick 75 x 75 mm 100 sheet , envelope light green unlined cloth 16 inchx12 inch 100 pcs per pkt , envelope , toilet brush with handle best quality , punching machine kores two holes , note pad dairy printed mes logo with office name each page having mes logo as per office sample size h 22cm into w 13.5cm with spiral binding 150 pages 75 gsm , white board marker blue good quality , white board marker black good quality upto 2 point 5mm line width , duster cloth , scrubber scrotch brite , carbon paper pack of 100 sheets , km card as per sample , tea cup set with saucer set of 6 , harpic toilet cleaner 1 ltr , dettol liquid 1 ltr good quality or 675 ml hand wash refill , sutli good quality 50 mtr roll , phenyle 1 ltr good quality , mop with handle good quality , rubber gloves good quality , borosil 350ml set of 6 pcs radius vision transparent drinking glass borosilicate glass tumblers for water cold drinks juice flame proof microwave and dishwasher safe for daily use and gifting , hard broom sweeping good quality , good knight gold flash liquid vapourizer mosquito repellent combo pack machine pack of 2 refills 45ml each , jk paper green paper ledger paper 8 point 5 into 14 inches 500 sheets 80 gsm 1 ream , 180 gsm a4 size glossy photo paper water proof instant drying pack of 50 sheets compatible with inkjet printer , white envelop for dos 7into5 inch , register 300 pages , register 400 pages , transparent sheet roll 50 m long 3ft wide double , staedtler 137 c 48 luna water colour pencil pack of 48 multicolour , despacher massenger bag larg size super quality durable 11 or 14 ltr multiple organiser , vim bar 200 gm , bucket 20 ltr cap with handle with mug set , water bottler 1 ltr or 720 ml cap cool pu insulated plastic , umbrela large size 50 to 60 inch with cover water proof uv protection for 2,3 person auto open , tissue paper holder , container box 3 pcs set 500 ml each , jk bond paper for omr sheet 80 gsm 500 paper ream //bid details 2 / 65

State Government

CTN :40773173

03 Jul, 2025 NA

Patiala - Punjab

Tender For lab kits consumables and other items for rajindra hospital patiala - g6pd kits, methanol 2.5ltrs bottles, westergren pipttes, syringe (20ml), jamshidi needle, lignocane 2% 30ml (bottels), blotting sheet 2 bundles (1000 sheets ) boxes, cover slip boxes, nutrient agar (500 gms) boxes, potato dextrose agar (100 gms) boxes, nutrient gelatin (100gms) boxes, of basal media (100 gms) boxes, corn meal agar (500 gms) boxes, hi chrome candida differential agar (100gms) boxes, dextrose (500gms) boxes, sucrose (500gms) boxes, mannitol (500gms) boxes, lactose (500gms) boxes, acetone (litre x 5), acid carbolic (500 gm), acid sulphuric (2.5l ), disodium hydrogen phosphate (500 gm), ferric chloride ar (500 gm), glycerine (500 gm), toluidine (gm), i- phenylalanine (500 gm), neutral red (125 gm), acid fuchsin ( 25 gm), potassium tellurite (25gm), sodium taurocholate (500 gm), methyl red reagent (100ml), andrade s indicator (100ml), alpha napthylamine (500gm), potassium iodide (100gm), sulphanillic acid 0.8% (100 ml), n, n, n ,n- tetramethyl-p-phenylenediamine dihydrochloride (5g), potassium hydroxide (500gm), widal test kit 4x5ml (to,th,ah,bh) (kits ), crp latex slide agglutination kit (50 tests), ra latex slide agglutination kit (50 tests), aso latex slide agglutination kit (50 tests, toxoplasma strip test, rpr strip test, hav rapid card, hev rapid card, hep b core antibody igm and igg elisa, rubella igm elisa, cmv igg elisa, hsv-1&2 igm - elisa, petri dish 3 (pc), petri dish 4 (pc), petri dish 4"disposable (pc), durhams tube, over slips (20 boxes (400 packets), blood culture bottles (50ml) 1367019 (bottles), blood culture bottles (160ml) 1367019 (bottles), whatman filter paper rim, filter paper rim (ordinary) (rim), heating elements (autoclave) (elements), t3 (96 wells), t4 (96 wells), tsh (96 wells), ca-125 (96 wells), cea (96 wells), ca-15.3 (96wells), alpha fetoprotein (afp) (96wells), ca-19.9 (96 wells), beta hcg (96 wells), amylase, cpk-mb (20x1.1 ml), ldh (20x1.1 ml), cpk total(ck-nac) (15x1.1 ml), micro protein kits for csf (1x50 ml), blood urea kit (2x1 litre), uric acid (4x50 ml), ammonium sulphate 500gm/(ar) ( packs), disodium phenyl phosphate 100gm per pack (ar) ( packs), trichloracetic acid (tca) ar 500gm ( packs), methanol (ar) 2.5 ltr per pack ( packs), trisodium citrate (ar) 500gm per apck ( packs), methylated sprit (ar) 5lrt per apck ( packs), sodium dihydrogen phosphate (nah2po4) (ar) ( packs), sulphur powder ar 500gm per pack ( packs), liquor ammonia ar 250 ml per pack ( packs), acetone ar 2.5 ltr /pack, barium chloride ar 500gm per apck ( packs), fouchest s regeants ar 500gm per apck ( packs), ehrlich s regeant ar 500gm per apck ( packs), starch soluble extra pure ar 500gm per apck ( packs), d- fructose ar 500gm per apck ( packs), glactose extra pure ar 100gm per apck ( packs), benedict s regeant ar 5 lrt/pack ( packs), dextrose ar 500gm per apck ( packs), auto pipettee (variable sizes) 10-100 microlitre good quality, auto pipettee (variable sizes) 100-1000 microlitre good quality, multi channnel (8-channel) auto pipettee (variable sizes) for elisa test good quality, plastic test tubes (13x75 mm) 100 pieces per pack. good quality (packs), aliquots (2.5 ml) (500 pieces per pack) good quality (packs), paper roll 57mm(for elisa reader) length 30 meter per pack good quality (packs), tissue roll 6 pieces per pack good quality (packs), filter paper 500 pieces per pack good quality (packs), sample cup 500 pieces per pack good quality (packs), poly rack 12-24 hole (15x125mm) (rack), glass pipettes 5ml (borosilicate), glass pipettes 10ml (borosilicate), tube holding good quality

CTN :40685678

03 Jul, 2025 NA

Ghaziabad - Uttar Pradesh

Tender For supply of consumables for pharmacology lab - two two diphenyl one picrylhydrazyl dpph extrapure 95 percent , abts 2,2 azino bis 3 ethylbe nzothiazoline 6 sulfonic acid diammonium salt, 98 percentage extrapure , ethanol 99.9 percentage absolute ethyl alcohol pure 99.5 percent pack of 2.5 l , butylated hydroxytoluene pure, 99 percentage , di-sodium hydrogen phosphate anhydrous , gallic acid pure, 98 percentage , petroleum ether extra pure 100-120 pack of 2.5 l , hydrogen peroxide , l ascorbic acid extrapure ar, 99.7 percentage , n 1 naphthyl ethylenediamine dihydrochloride, extrapure ar 98 percentage , nitroblue tetrazolium extrapure 99 percentage ar , orthophosphoric acid extrapure, 85 percentage , phenazine methosulfate 99 percentage extrapure , potassium dihydrogen orthophosphate for molecular biology, 99.5 percentage , potassium persulfate acs reagent, 99.0 percentage , quercetin dihydrate extrapure, 98 percentage , rutin trihydrate pure, 95 percentage , sodium phosphate dibasic anhydrous extra pure ar, 99 percentage , sodium phosphate monobasic anhydrous extra pure ar, 99 percentage , sulfanilamide extrapure 99 percentage , sulfanilic acid acs reagent, 99 percentage , 2,4,6 tri 2 pyridyl 5 triazine, tptz 99 percentage extra pure ar , trichloroacetic acid extra pure, 99 percentage , tris hydrochloride tris hcl extra pure ar, 99 percentage , nicotinamide adenine dinucleotide disodium salt reduced nadh.na2,dpnh.na2 extra pure, 98 percentage , phosphate buffer, ph 7.2 , phosphoric acid , dimethyl sulphoxide acs 99.9 percentage , tris buffer 10x , 2,2 azobis 2 amidinopropane dihydrochloride , trolox water soluble vit. e analog , p nitrophenyl d glucopyranoside pnpg , phosphate buffer ph7 , alpha amylase , 3,5 dinitrosalicylic acid , sodium hydroxide , angiotension converting enzyme ace pack of 0.1 unit , hippuryl his leu hhl , acarbose extrapure, 95 percentage , chloroform acs 99.8 percentage pack of 2.5 l , a glucosidase maltase ex yeast 100u per mg powder , low form glass beaker , glass beaker , erlenmeyer conical flask narrow mouth with rim , measuring cylinder , volumetric flask , glass filter funnel , glass mortar and pestle , glass serological pipettes, graduation 0.01 , glass serological pipettes , serological pipettes , petri dish 3.3 borosilicate , separating funnel , triangular tripod ss , forceps blunt dissecting , chattaway spatula , micro chattaway spatula , micro scoop , big spoon spatula , one end flat and one end spoon , test tube holder, cross pattern, stainless steel , reagent bottle narrow neck with screw cap , autoclavable bags, pp , 100 per pack , parafilm, 1 per pack , nitrile gloves powder free, 100 per pack , nitrile gloves powder free,, 100 per pack , nitrile gloves powder free, , 100 per pack , specimen container, pp with pp closure, 12 per pack , specimen container, pp with pp closure, , 12 per pack , rack for micro tube, pc,24 places, 0.5 ml, 4 per pack , rack for micro tube, pc,24 places, 1.5 ml, 4 per pack , universal micro tip box-96 places, 0.2-10 ul , universal micro tip box 96 places , 2-200ul , universal micro tip box, 96 places, 200-1000 ul , pipettor stand, 5 place, 1 per pack , drying rack, with drain hole, 30 pegs, 1 per pack , conical centrifuge tube rack, wells for 15 ml tube measure 17 mm dia, wells for 50 ml tube measure 28 mm dia, 4 per pk, , test tube stand, rpp, 20 places, 20 mm dia, 4 per pack , test tube stand, rpp, 18 places, 25 mm dia, 4 per pack , storage boxes, san per ldpe, 325 ml, 129x75x59 mm, 4 per pack , storage boxes, san per ldpe, 500 ml, 191x156x37 mm, 4 per pack , storage boxes, san per ldpe, 1000 ml, 127x73x175 mm, 4 per pack , utility carrier, pp, 380x240x115mm, 2 per pack , ice bucket with lid, pur, 2.5l, 1 per pack , minus 20 degree c mini cooler with gel filled cover 32 places, 1.5 ml, 1 per pack , micro centrifuge tube, 5ml, 100 per pack , micro centrifuge tube, 0.5 ml, 1000 per pack , micro centrifuge tube, 1.5 ml, 500 per pack , micro centrifuge tube, 2 ml, 500

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