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250 pieces (MOQ)$1.22

Chongqing New World Trading Co., Ltd.Portable pH Tester Test Strips 1-14 Litmus Paper pH Paper for All Solution

20 boxes (MOQ)$28.00

Guangdong Huankai Biology Sci.&Tech. Co.,Ltd.Water Test Kit Water Test Strips Dpd Ozone Test Kit Chlorine Test Total Hardness Test Low Hardness Test Ammonia Nitrogen Test

1 Piece (MOQ)$1.00

HANGZHOU KIMISLAB CO., LTD.Saliva 100 pH Test Paper Strips for Water

1000 Pieces (MOQ)$1.10

Ningbo Yingmed Medical Instruments Co., Ltd.5m Roll pH Test Strips, Universal pH Test Paper Strips Roll pH Measure Range of 1 - 14

1 Piece (MOQ)$1.00

HANGZHOU KIMISLAB CO., LTD.pH Test Indicator Strips Paper

10 box (MOQ)$36.90

Guangdong Huankai Biology Sci.&Tech. Co.,Ltd.Rapid Water Hardness Test Strip, Total Hardness Test Paper

10 box (MOQ)$36.00

Guangdong Huankai Biology Sci.&Tech. Co.,Ltd.Hydrogen Peroxide Water Test Strip, 0-25 Mg/L, H2O2

10 box (MOQ)$25.00

Guangdong Huankai Biology Sci.&Tech. Co.,Ltd.060070 Water Quality (fecal) Coliform Test Paper -IV (1mL) Water Test Kit

1 Piece (MOQ)$1.00

HANGZHOU KIMISLAB CO., LTD.Universal 0 14 0-14 pH Precision Test Paper Strips Roll

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Qingdao Aost Medical Manufacture Co., Ltd.Universal Neutral pH Test Strips Litmus Blue Test Paper/Red Litmus Paper

20 box (MOQ)$36.90

Guangdong Huankai Biology Sci.&Tech. Co.,Ltd.Ammonia Nitrogen Rapid Water Test Paper, Indicator Paper Water Test Kit (0-100mg/L)

10 box (MOQ)$39.00

Guangdong Huankai Biology Sci.&Tech. Co.,Ltd.Chlorine Dioxide Test Strip 10-500 Mg /L U for Rapid Determination in Water

250 Box (MOQ)$1.50

Chongqing New World Trading Co., Ltd.100 Strips/Box Universal Test Paper pH Indicator Paper Stick pH Test Strip 0-14