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Test Tube Brush, Small, 12mm dia
Test Tube Brush, Small, 12mm diax 70mm brush black bristle,230mm long, sturdy wire handle ..
Test Tube Brush, Medium, 20mm dia
Test Tube Brush, Medium, 20mm dia x 70mm quality black bristle,sturdy wire handle 230mm long ..
Test Tube Brush, Large, 30mm dia
Test Tube Brush, Large, 30mm diax 80mm brush, high quality black bristle,fan tipped with sturdy w..
Test tube borosilicate 22mm x150mm with plastic stopper
Test tube borosilicate 22mm x 150mm with plastic stopper 19/26 ..
Test tube borosilicate 22 x150mm with glass stopper
Test tube borosilicate 22mm x 150mm with glass stopper 19/26 ..
Test tube borosilicate 18x150mm with plastic stopper
Test tube, borosilicate glass, plain 18mm x 150mm with 14/23 plastic stopper ..
Test tube borosilicate 18x150mm with glass stopper
Test tube borosilicate 18mm x 150mm with glass stopper 14/23 ..
Test Tube 150mm x 24 mm, rimmed, Pyrex pk50
Test Tube, 150mm x 24mm,outside diameter, inner diameter 20mm. rimmed, pyrex, high quality b..
Test Tube 12mm x 75mm, rimless,borosilicate glass, box 250
Test Tube 12mm x 75mm,rimless borosilicate glass, box 250  ..
Test Strips, Water Hardness
Test Strips, Water Hardness. (100-400ppm) quantitative, vinyl strips with sensing pad and color s..
Test Strips, Sulfite
Test Strips, Sulfite,(10-50-100-250-500ppm),quantitative,vinyl strips,pk/50 with sensing pad and ..
Test Strips, Phosphate
Test Strips, Phosphate,(0-10-25-50-100ppm), quantitative, vinyl strips, with sensing pad and colo..
Test Strips, Nitrate/ Nitrite
Test Strips, Nitrate/ Nitrite, two pad strip separately measures Nitrate(10-25-50-100-250-500ppm)..
Test Strips, Chlorine, Low Range
Test Strips, Chlorine, Low Range,(0-1-3-5-10ppm), quantitative, pk/50 with sensing pad and color ..
Test Strips, Chlorine, High Range
Test Strips, Chlorine, High Range,(25,50,100,150,200ppm), quantitative,vinyl strips with sensing ..
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