Latest pressure aging vessel Tenders | Government pressure aging vessel Tenders

Central Government/Public Sector

CTN :41260250

10 Sep, 2025 NA

Kolkata - West Bengal

Tender For corrigendum : supply of ph meter with auto sampler

State Government

CTN :41496185

08 Sep, 2025 7.77 Lacs

Palakkad - Kerala

Tender For corrigendum : kerala water authority funds deposit supply and installationof lab equipments for maintaining quality standards in various schemes under p h division palakkad - supply of lab equipments to various wss and rwss under p h division palakkad, od114374/2025-2026:supply and installation of jar test apparatus with the specifications are (1). number of stirres - 6 minimum, (2). rpm- 25 to 200 rpm or better, (3). capacity of single stirrer unit- 1 l, (4). control -digital control (digital timer & r.p.m counter), (5). stirrer paddle material (with appropriate corrosion protective coating) - stainless steel, (6). power single phase (220 - 240 volts), (7). illumination -fluorescent tube ; llumination should not contribute heat to the system, (8). warranty period -2 years. etc; complete., od114368/2025-2026:supply , installation and calibration of digital nephelo turbidity meter with the specifications are ; (1). range : 0 to i000ntu , (2). range selection : manual /automatic , (3). resolution : 0.1 ntu or better , (4). accuracy : +or- 3% or better, (5). calibration : 4 points minimum (manual/auto selection) , (6). light source : led/tungsten halogen lamp , (7). detector : photodiode , (8). display : lcd/led , (9). power : 230v +or- 10 % , 50 to 60hz, (10). accessories: matching test tubes(4 nos minimum ) and light shield, l000ntu solution 500 ml minimum, (11). instrument manual with specification details(hard copy) , (12). warranty : 2 years for the entire instrument etc ; complete., od114367/2025-2026:supply , installation and calibration of bench top ph meter with the specifications are (i). ph - range : 0.00 to 14.00 ph or better, resolution : 0.01or better, accuracy : +or- 0.02 ph or better, calibration points : 3 points minirnum, buffer options : : standard buffers (ii). mv - range : 0 to +or- l999mv, resolution : i mv or better, accuracy : + or - 1 mv or better (iii). temperature - 0.0 to 99 degree c or better, resolution : 0.1 degree c or better, accuracy : + 0.5 degree c or better (iv). electrode qpecification: single junction ,body-plastic /unbreakable, gel filled electrode atc probe and electrode stand should also be provided. (v). meter features - 1) lcd i led display, 2) dual display of ph or mv with temperature , 3) with auto buffer recognition, 4) off set/slope should be displayed , 5) power 230v +or - 10%, 6) buffer solutions 7 .0, 4.0, 9.2 ph (100m1 minimum) should be provided, 7) should provide all accessories for smooth functioning of the equipment, 8) hard copy of user manual with instrument specification, 9) warranty: 1 year for entire insruments etc; complete., od114377/2025-2026:supply of laboratory equipments including electronic weighing balances,etc. with 2 year warrenty including conveyance charges, od114750/2025-2026:supply and installation of digital conductivity meter 308 with the specifications are (i). conductivity - 1). range : 0.1 us to 100 ms (6 decadic ranges) , 2). accuracy : +or - 1% of fs + or - digit. 3). resolution : 0.001 micro.s (ii). tds - range : 0.1ppm to 100 ppt (6 decadic ranges ), accuracy : + or - 1% of fs (iii). temperature - temperature : 0 degree c to 100 degree c( auto / manual ), resolution : 0.1 degree c. , accuracy : + or - 0.2 degree c. etc; complete with 2 year warrenty, od114370/2025-2026:supply of buffer solution for ph 4 and ph 7(500ml bottle)

Central Government/Public Sector

CTN :41625633

11 Sep, 2025 NA

Mangalore - Karnataka

Tender For supply of chemicals & materials silver metal wire abt. 1mm , n-hexane pure, 99% , o-tolidine extrapure ar, exiplus, multi-compendial, 98% , potassium iodide pure, 99% , gallium (iii) nitrate hydrate extrapure, 99.9% , cesium nitrate extrapure, 99% , aluminium nitrate nonahydrate acs, 98.5% , dish, crystallizing, without spout , hot plate magnetic stirrer , condenser, liebig , flask round bottom, two necks (side neck at angle) , receiver adapter - plain bend , flask round bottom, single neck , beaker 1000ml , beaker 500ml , lanthanum nitrate hexahydrate reagent grade, 99% , chromium (iii) nitrate nonahydrate pure, 96% , ph meter , orthophosphoric acid extrapure, 85% , potassium iodide pure, 99% , n hexane , filter funnel, plain, short stem , powder funnel , thermo meter 0-110 , high vacuum silicon grease (vacuum grease) , flask round bottom, single neck , storage vail 5.0 ml , ptfe coated magnetic stirring bar 6x18mm , ptfe coated magnetic stirring bar 25mm , ptfe coated magnetic stirring bar 7x15mm , beaker 1000ml , beaker 500ml , flask, conical (erlenmeyer) graduated 250ml , volumetric flasks 250ml , measuring cylinder 500ml , burette, with straight bore glass key stopcock, 25ml , pipettes, graduated, mohr type, class b 25ml , burette, with screw type ptfe needle valve-50ml , filter funnels 75mm omsons , polyethylene glycol 20000 flakes , polyvinyl alcohol cold mw~85000-124000 , polyvinyl alcohol hot mw~13000-23000 , micro centrifuge tube, pp autoclavable, 2.0ml, 500/pk , centrifuge tube, conical bottom, 50ml, pp with screw cap (sterile) 500/pk , centrifuge tube, conical bottom, 15ml, pp with screw cap (non sterile) 500/pk , sterile disposable petriplates, polystyrene, optically clear, 90mm dia *15mm, individually packed , potassium permanganate emplura , carboxymethylcellulose sodium salt for analysis , microtips, pp autoclavable 2-200ul, 1000/pk , microtips pp autoclavable 200-1000ul, 500/pk , microtips pp autoclavable 0.2-10ul, 1000/pk , digital stop watch , sodium alginate , polyaniline emeraldine base

State Government

CTN :41391474

25 Sep, 2025 40.0 Thousand

Barwani - Madhya Pradesh

Tender For supply of instruments for laboratory as per nabl requirement for district water testing laboratory, sndhwa distt.- barwani - supply of instruments for laboratory as per nabl requirement for district water testing laboratory, barwani distt.- barwani, ph meter- make - systronics/ mettler/ hache

State Government

CTN :41217191

17 Sep, 2025 NA

Kheda - Gujarat

Tender For corrigendum : supply of mechanical measuring instruments & spanners (tools & tackles) at wtps - digital outside micrometer with large digital display. size : 0 - 25mm, resolution: 0.0001 mm., digital outside micrometer with large digital display. size : 25 - 50mm, resolution: 0.0001 mm., digital vernier calipers size - 0-300 mm mitutoyo make, allen key set black finish of mm series having sizes 1.5mm ,2mm,2.5 mm ,3mm ,4mm ,5mm ,6mm , 8mm , & 10mm allen keys, taparia make: allen keys (mm.sizes) black finish ,is 3082-1988 sizes- 12 mm,14mm, 17mm, 19mm, 22mm, 24mm, adjustable spanners , 110 mm length ,least max. opening 13 mm, chrome plated, with soft grip, chain pipe wrench, taparia product no: cpw 06, length:1000 mm, suitable for pipe dia. 150 mm, hss drill bit set 3 mm to 12 mm, weighing scale digital, polyester webbing slings with reinforced eye loop at both ends as per en 1492-1 size 125mm x 5t x 3mtr x red, polyester webbing slings with reinforced eye loop at both ends as per en 1492-1 size 125mm x 5t x 5mtr x red, copper round bar of size 40mm x5oo mm long, polyester flat belt webbing sling with plain eye loops at both ends, conf. to bs: 3481/part-ii capacity: 5 ton, std length: 5 mtrs, bolt cutter length-450 mm, chain pulley block cap-1 ton x3 mtr lift, chain pulley block cap-2 ton light weight, chain pulley block cap 3 ton, lift: 4.5 m, mitutoyo make dial gauge with magnetic stand : 0-10mm, steel wire rope sling with soft eye splice at both ends conf. to is: 5245/part-ii capacity: 10 ton, rope dia: 32 mm, std. length: 2 mtrs, taparia make t handle hex key. product no. tak 5., taparia make t handle hex key. product no. tak 6., torque wrench standard generally confirming to is 6789:2008 mac master product no-tw-2000r (range-1000-2000 lb.ft/135-275 kgf.m/1350-2700 n.m), torque wrench standard generally confirming to is 6789:2008 taparia product no-tw1000 (range-400-1000 lb.ft/55-140 kgf.m/540-1380 n.m), allen key set black finish of inch eries having sizes 1/16" , 5/64" ,3/32" , 1/8",5/32",3/16",7/32",1/4",5/16",3/8" allen keys, grease gun, polyester webbing slings heving specification capacity- 1tons,length-3mtr and width-50mm (max), screw spanner-12", non sparkable fixed spanner set : size: 6x7,8x9,10x11,12x13,14x15,16x17,18x19,20x22,21x23,24x27,25x28,30x32., fix spanner size 12x13 mm ., ring spanner size 12x13 mm, fix spanner size 10x11 mm, jhalani/tapariaring spanner 10x11 mm, fix spanner size 14x15 mm jhalani make, fix spanner 16x17 mm, jhalani/tapariaring spanner 16x17 mm, fix spanner 18x19 mm, jhalani/tapariaring spanner 18x19 mm, fix spanner size 24x26 mm, ring spanner size 24x26 mm, fix spanner 30x32 mm, ring spanner 30x32 mm, steel wire rope sling with soft eye splice at both ends, conf. to is: 5245/part-ii capacity: 1 ton, rope dia: 10 mm, std. length: 3 mtrs, steel wire rope sling with soft eye splice at both ends conf. to is: 5245/part-ii capacity: 2 ton, rope dia: 16 mm, std. length: 3 mtrs, steel wire rope sling with soft eye splice at both ends conf. to is: 5245/part-ii capacity: 5 ton, rope dia: 22 mm, std. length: 5 mtrs, circlip plier external (bent nose),product no: 1444.7,capacity :19.6 mm, length:180 mm, taparia or jhalani or any equivalent make, internal circlip plier size 8" no1440 taparia make, two stage two gauge acetylene gas pressure regulator model : dura a-1.5 - esab make, two stage two gauge oxygen gas pressure regulator - model no : dura 0-10 - esab make, hanna make tds tester (0-2000 ppm), model: hi98301, hanna make ph meter, model: hi98107

Central Government/Public Sector

CTN :41489566

06 Oct, 2025 1.00 Crore

Noida - Uttar Pradesh

Tender For open tender document for e-procurement of laboratory equipment (soil, aggregates, cement, reinforcing bar, concrete test equipment, water, geo-textile and geogrid) for material testing laboratory of iahe - soil, unconfined compressive strengthcompression device with digital load frame: hydraulic proving ring, dial gauge vernier callipers, timer, oven, weighing balance, shear strength vane shear apparatus, grain size analysis as per is:2720 (part- iv)pipette apparatus (i) sampling pipette (ii) glass sedimentation tubes (iii) weighing bottles (iv) deleted (v) stirring apparatus (vi) sieves -2mm, 425umm , 75umm is sieves (vii) deleted, specific gravityhydrometer apparatus: two 1000 ml graduated cylinders, dispersing agent solution containing sodiumhexa-metaphosphate, dessicator and centimetre scale., shrinkage limit testfull set of equipments 1.) evaporating dish of porcelain, 2.) spatula and straight edge, 3.) balance-sensitive to 0.01 g minimum.4.) shrinkage dish. circular, porcelain or non-corroding metal dish, 5.) glass cup. 50-55 mm in diameter and 25 mm in height,6.) glass plates. two, 75x75 mm one plate of plain glass and the other prongs, 7.) thermostatically controlled oven,8.) wash bottle containing distilled water, 9.) graduate-glass, with capacity of 25 ml. 10.) mercury., sand equivalent value(i) graduated cylinder (ii) irrigator tube (iii) siphon assembly (iv) weighted foot assembly (v) measuring can (vi) sieve -4.75mm (vii) funnel (viii) 4- litre bottle (ix) flat pan (x) timing device (xi) sand equivalent shaker, ph test -electronic method(i) ph meter (ii) digital balance 300 gm capacity-sensitive 0.001gm (iii) 100ml glass beaker -3nos. (iv) volumetric flask-500ml -nos. (v) wash bottle-100 ml (vi) mortar with rubber covered pestle, aggregates, polished stone value (i) accelerated polish machine mounted on firm ,level and non resilient base of stone or concrete (ii) road wheel (iii) means for rotating road wheel (iv) means for bringing the surface of a rubber-tyred wheel of 20 cm diameter and 5 cm breadth to bear on the stone surface of the road wheel with a total load of 40 kg. (v) means to feed the sand and water at a uniform rate (vi ) means to feed the emery powder and water at uniform rate (vii) friction tester: is: 2386 part 4 as per specification of rrl uk (viii) 25 kg hard siliceous sand (ix) emery powder 5 kg, alkali aggregate reactivitymortar bar method: scales, weights, sieves, glass graduates, specimen moulds, mixing bowl, tamper, trowel, containers, length comparator, alkali aggregate reactivity chemical method:1. electronic balance2. pulveriser3. reaction container, reagents, glassware, petrographic examination 1. geological hammer2. petrographic microscope3. screen confirming to is sieve4. digital balance5. portable handheld cutting machine6. hand lens7. glass sides etc., deleterious material & organic impuritiessedimentation pipette: a watertight screw-topped glass jar, 1000 ml measuring cylinder, chemicals, containers, sieves, cement, soundness (autoclave apparatus)graduated glass cylinders, moulds, autoclave, length comparator, compaction (mortar cube vibrator), fineness (blaine air permeability apparatus), ph meter ( 2 in nos.), reinforcing bar (steel), reinforcing bar (steel) universal testing machine,to determine unit weight, yield strength,, proof stress, ultimate tensile strength, % elongation, bend and re-bend test, concrete test equipment, vibrating table 1mx1m(full set of equipments), needle vibrator ( 2 in nos.), permeability, dry shrinkage (shrinkage apparatus) ( 2 in nos.)(full set of equipments), air content (air entrainment meter apparatus)(full set of equipments), durability (rapid chloride ion permissibility apparatus), depth of penetration (water permeability apparatus) ( 2 in nos.)(full set of equipments), water, physical analysis of water, geo textile and geogrid, pull-out resistance of geotextile /geogrid

Central Government/Public Sector

CTN :41618724

18 Sep, 2025 NA

Seraikela-Kharsawan - Jharkhand

Tender For supply of concave mirror , convex mirror , concave lens , convex lens , measuring scale , lens holder , rectangular glass lab , prism , battery boxes , copper wire , key , ammeter , voltmeter , resistance box , beaker , rheostat , vernier calliper , screw gauge , connecting wire , compass needles , half meter scale , spring balance , spirit level , clamp with stand , thin strong thread , bob , spherometer , magnifying glass , half meter scale , beam balance , 50g and 20g weight , multimeter , drawing board , inclined plane , lechlanche cell , horshoe magnet bar spherical cylindrical , stand , travelling microscope , simple pendulum , optical bench , test tube , test tube holder , platinum loop , spatula stainless steel , watch glass , magnesium metal ribbon , zinc granules , litmus paper red blue , copper turning , burette brush , bottle brush , ph paper , filter paper round , bunsen burner , burette clamp , retort stand sheet metal , tripod stand , tongs , analytical balance , china dish , mortor pestle , beaker 50 ml 100ml , reagent bottle , test tube stand , measuring cylinder 25ml 50ml , conical flask , volumetric flask 50ml 100ml , burette 25 ml , funnel , glass rod , dropper , burette stand , pipette , melting point apparatus , wire gauge , thermometer , sand paper , bore cork, rubber cork , hcl hydrochloric acid , h2so4 sulfuric acid , hno3 nitric acid , ch3cooh acetic acid , sodium chloride , ammonium hydroxide , potassium hydroxide , ammonium chloride , sodium metal , ferrous sulphate , ferric chloride , sodium nitroprusside , lead acetate , silver nitrate , sodium carbonate , sodium hydrogencarbonate , sodium bicarbonate , barium chloride , silver nitrate , sodium sulphate , distilled water , oxalic acids crystals , phenolphthalein indicator , ferric chloride , potassium thiocyanate , cobalt chloride , acetic acid , benzoic acid , ethanol , acetone , copper sulphate , barium chloride , potassium permanganate , lead nitrate , calcium hydroxide , methyl orange , baking soda , quick lime , calcium carbonate , aluminium sulphate , zinc sulphate , copper oxide , nesslers reagent , compound microscope , glass slides , cover slips , scalpel , forceps , mounted needle , brush for sample handling , watch glass , test tubes , test tube holder , test tube stand , petri dish , spirit lamp , glass rod , distilled water bottle , filter paper , conical flask , ph paper ph meter , wire gauze , water bath , weighing balance , clamp stand , syringe , burner , tracing paper , dissecting tools dissecting tray blade , chromatography chamber , capillary tubes for chromatography , methylene blue , safranin , iodine solution , glycerine , sodium bicarbonate , lime water calcium hydroxide solution , glucose , starch solution 1 percent , benedicts solution , fehlings solution a and b , biuret reagent , copper sulphate , sodium hydroxide , chlorophyll extract , hydrochloric acid hcl( hydrolic acid) not specification matching, h2so4 (sulfuric acid) not specification matching, hn03 ( nitir acid ) not specification matching, ch3cooh (actic acid) not specification matching, sodium chlodide not specification matching, ammonium hydroxide not specification matching, potassium hydroxide not specification matching, ammonium chloride not specification matching, sodium metal not specification matching, ferrous sulphate not specification matching, ferric chloride not specification matching, sodium nitroprusside not specification matching, lead acetate not //bid details 2 / 123 specification matching, silver nitrate not specification matching, sodium carbonate not specification matching, sodium hydrogencarbonate not specification matching, sodium bicarbonate not specification matching, barium chloride not specification matching, sodium chloride not specification matching, distilled water not specification matching, oxalic acids crystals not specification matching, phenolphthalien indicator not specification matching, ferric chloride not specification match

Central Government And Public Sector

CTN :41596560

15 Sep, 2025 NA

Chittaranjan - West Bengal

Tender For rate contract for two years of civil and plumbing items for cnci hazra and newtown campus - civil & plumbing items, ceramic basin 18"x16", ceramic basin 16"x14", ceramic sink 16"x14", ceramic sink 24"x18", ss kitchen sink 16"x14", pvc jet spray for toilet shower, pvc liquid soap dispenser, ss 2 in 1 bib cock, ss elbow action bib cock, ss long body big handle bib cock, ss elbow action laboratory pillar cock, ss high neck with elbow action pillar cock, ss long tall boy pillar cock, pvc connector pipe 3, pvc connector pipe 2, 3 jag spindle, ss towel ring, ss towel rod 2, ss towel rod 16", mirror 36"x24", flexible pvc waste water drain pipe, 5 jaw pvc cap, 5 jaw weast brass, 5 jaw pvc pipe, 3 jaw pvc pipe, 1.5 inch pvc pipe, 1 inch pvc pipe, 0.5 inch pvc pipe, 5 jaw upvc pipe, 3 jaw upvc pipe, 1.5 inch upvc pipe, 1 inch upvc pipe, 0.5 inch upvc pipe, 3 jaw cpvc pipe, 1 inch cpvc pipe, 5 jaw pvc tee, 3 jaw pvc tee, 1.5 inch pvc tee, 1 inch pvc tee, 0.5 inch pvc tee, 5 jaw pvc elbow, 3 jaw pvc elbow, 1.5 inch pvc elbow, 1 inch pvc elbow, 0.5 inch pvc elbow, 5 jaw pvc metal elbow, 3 jaw pvc metal elbow, 1.5 inch pvc metal elbow, 1 inch pvc metal elbow, 0.5 inch pvc metal elbow, 5 jaw pvc socket, 3 jaw pvc socket, 1.5 inch pvc socket, 1 inch pvc socket, 0.5 inch pvc socket, 5 jaw pvc fta, 3 jaw pvc fta, 1.5 inch pvc fta, 1 inch pvc fta, 0.5 inch pvc fta, 5 jaw pvc mta, 3 jaw pvc mta, 1.5 inch pvc mta, 1 inch pvc mta, 0.5 inch pvc mta, heavy duty door closer for aluminium door, heavy duty door closer for wooden door, heavy duty ss floor spring, heavy duty ss kabza 5", heavy duty ss kabza 4", heavy duty ss kabza 3", heavy duty mortise lock, heavy duty mortise lock round shape, ss door handle 6", aluminium door handle 6", heavy duty ss tower bolt lock set 10", heavy duty ss tower bolt lock set 8", ss door latch lock set 12", ss door latch lock set 10", ss door latch lock set 6", multi purpose lock for wooden drawer, cabinet,furniture, ss ring pulls for wooden drawer, cabinet,furniture, ss door stopper, ss rod rubber for door stopper, lock and key for door, touchwood for wooden furniture polish, gala for wooden furniture polish, overhead shower head (4"), overhead shower arm, waste coupling sink 32mm, waste coupling basin 32mm, pillar cock brass, health faucet (brass) abs body, flexible tube, teflon tape (12mm wide and 10m length), wc seat cover, geyser connecting pipe 24 inch, acid (hydrochloric acid) (hci), elbow operated pillar cock, elbow operated bib cock, bottle trap 32mm, fixed grating ss (4" inner dia), magic pipe, urinal sensor, under counter basin, commode connecting pipe, basin mixer pipe, ewc floor mounted, ewc wall hung, concealed cistern set, exposed cistern set, wall mixer 2 in 1, angular valve, water cooler tap, float valve 32mm, float valve 40mm, nrv 80mm, drip seal, fta cpvc 20mm, fta cpvc 15mm, cpvc socket 20mm, cpvc socket 15mm, cpvc reducer 15/20, cpvc elbow 20mm, cpvc elbow 15mm, cpvc brass elbow 20x15 mm, cpvc brass elbow 15x15 mm, cpvc ball valve 25mm, cpvc ball valve 20mm, cpvc pipe 20mm, cpvc pipe 15mm, swr pipe 40mm, swr elbow 40mm, swr tee 40mm, swr pipe 110mm, swr elbow 110mm, swr tee 110mm, ph meter with strip, tds meter, groove plier, under counter wash basin, above counter wash basin, cement solvent for cpvc pipe, cement solvent for upvc pipe, tank cover, hex nipple, extension nipple 1 inch, extension nipple 1/2 inch, extension nipple 2 inch, cpvc mta 20x15, cpvc mta 20x20, rubber gaskit 6mm, wd-40 multipurpose cleaning spray 500 ml, pressure gauge 16kg, pressure gauge 7kg, brass ball valve 25mm, brass ball valve 20mm, cpvc socket 65mm, cpvc socket 80mm, cpvc socket 50mm, tank nipple 2 inch, gate valve 2 inch, mta 50mm, union 50mm, 5000 ltr water tank, 10000 ltr water tank, 7500 ltr water tank, geyser 15 ltr, ss sink, vaccum for urinal cleaning, stainless steel drain pipe cleaning spring 5 ft, rigid drain cleaner 7.62 m (25 feet) length, basin mixture, 5 micron cartridge 10 inch, ultra filter 4 inch, co

Corporations And Associations And Others

CTN :41600324

05 Sep, 2025 NA

Rohtak - Haryana

Tender For providing of lab chemical and apparatus - white enamel mug, plastic bucket 10 ltr., plastic glass, baume hydrometer, size - 0-10, t.d.s meter digital (pen type), beaker, size - 250ml, beaker, size - 500ml, glass measuring cylinder, size - 1000ml, p.h. paper, size - 2-10.5, sodium hydroxide solution, potassium phosphate, alfa naphthol, ammonium hydrate solution 10%, sodium acetate, methyl red indicator, edta solution, conc. acetic acid, ammonium oxalate solution 4%, dilute hydrochloric acid, silver nitrate, sodium chloride, hcl (98.5%), plastic cylinder (1000ml), spirit, lead sub acetate (in 5kg pkt.), universal indicator, filter paper, uranium acetate, test tube (big size), distilled water, wattman no.1 paper, phenolphthalein indicator, conc. h2so4

CTN :40903194

10 Sep, 2025 NA

Uttara Kannada - Karnataka

Tender For corrigendum : tender for supply of test equipment spares - buffer solution ph 10.01 buffer , buffer solution conductivity 12.88 ms kcl , buffer solution ph 4.01 buffer , buffer solution ph 7.00 buffer , buffer solution conductivity 1413 ms kcl , conductivity meter 0-200 ms/cm , 0-2000 ms/cm , 2-20 ms/cm , indion reagent-a (3 x 100 ml bottles) , indion reagent-b (3 x 100 ml bottles) , electrode ph meter replacement sensor , ph meter -1.00 to 15.00 , electrode ph meter replacement sensor , refractometer - de coolants 0-10 brix

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