pH, ORP, ISE Testing


Essential testing for water chemistry control.


pH, ORP, and ISE testing solutions ensure proper water balance and treatment efficiency. These tools provide precise readings in municipal and industrial settings and optimize water quality.

Hach Buffer Powder Pillows, pH 10.01 Color-coded Blue, pk/50, 2227166
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Hach Buffer Powder Pillows, pH 10.01, Color-coded Blue, Pack of 50, 2227166
$33.95

Mfr. Part # 2227166

Product # 700061

Core & Main pH & ORP Electrode Cleaner Solution, 500 mL
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Core & Main pH & ORP Electrode Cleaner Solution, 500 mL
$16.55

Mfr. Part # EC9500-P

Product # 707373

Core & Main Electrode Storage Solution, 1 L
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Core & Main Electrode Storage Solution, 1 L
$41.00

Mfr. Part # ES9470-Q

Product # 707372

Core & Main Electrode Storage Solution, 500 mL
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Core & Main Electrode Storage Solution, 500 mL
$26.20

Mfr. Part # ES9470-P

Product # 706993

Core & Main pH Buffer Solution, pH 7.00, 20 mL, 20/Pack
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Core & Main Buffer Solution pH 7.00 20 mL 20/Pack
$43.90

Mfr. Part # BU5007-BP

Product # 707370

Core & Main pH Buffer Solution, pH 4.00, 20 mL, 20/Pack
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Core & Main Buffer Solution pH 4.00 20 mL 20/Pack
$43.90

Mfr. Part # BU5004-BP

Product # 707369

Core & Main pH Buffer Solution, pH 10.00, 20 mL, 20/Pack
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Core & Main Buffer Solution pH 10.00 20 mL 20/Pack
$43.90

Mfr. Part # BU5010-BP

Product # 707371

Core & Main pH Buffer Solution, pH 9.18, Colorless, 500 mL
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Core & Main Buffer Solution pH 9.18 Colorless 500 mL
$17.80

Mfr. Part # BU5918-P

Product # 707142

Core & Main pH Buffer Solution, pH 9.18, Colorless, 4 L
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Core & Main Buffer Solution pH 9.18 Colorless 4 L
$88.20

Mfr. Part # BU5918-G

Product # 707143

Core & Main pH Buffer Solution, pH 8.00, Colorless, 500 mL
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Core & Main Buffer Solution pH 8.00 Colorless 500 mL
$20.50

Mfr. Part # BU5008-P

Product # 707140

Core & Main pH Buffer Solution, pH 7.00, Yellow, 4 L Cubitainer
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Core & Main Buffer Solution pH 7.00 Yellow 4 L Cubitainer
$57.70

Mfr. Part # BU5007-F

Product # 707136

Core & Main pH Buffer Solution, pH 8.00, Colorless, 4 L
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Core & Main Buffer Solution pH 8.00 Colorless 4 L
$107.55

Mfr. Part # BU5008-G

Product # 707141

Core & Main pH Buffer Solution, pH 7.00, Colorless, 500 mL
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Core & Main Buffer Solution pH 7.00 Colorless 500 mL
$17.80

Mfr. Part # BU9507-P

Product # 707138

Core & Main pH Buffer Solution, pH 7.00, Colorless, 4 L
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Core & Main Buffer Solution pH 7.00 Colorless 4 L
$69.90

Mfr. Part # BU9507-G

Product # 707139

Core & Main pH Buffer Solution, pH 7.00, Yellow, 20 L Cubitainer
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Core & Main Buffer Solution pH 7.00 Yellow 20 L Cubitainer
$126.95

Mfr. Part # BU5007-T

Product # 707137

Core & Main pH Buffer Solution, pH 6.86, Colorless, 500 mL
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Core & Main Buffer Solution pH 6.86 Colorless 500 mL
$16.90

Mfr. Part # BU5686-P

Product # 707132

Core & Main pH Buffer Solution, pH 4.00, Red, 4 L Cubitainer
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Core & Main Buffer Solution pH 4.00 Red 4 L Cubitainer
$57.70

Mfr. Part # BU5004-F

Product # 707128

Core & Main pH Buffer Solution, pH 6.86, Colorless, 4 L
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Core & Main Buffer Solution pH 6.86 Colorless 4 L
$69.90

Mfr. Part # BU5686-G

Product # 707133

Core & Main pH Buffer Solution, pH 4.0, Colorless, 4 L
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Core & Main Buffer Solution pH 4.0 Colorless 4 L
$69.90

Mfr. Part # BU9504-G

Product # 707131

Core & Main pH Buffer Solution, pH 4.00, Red, 20 L Cubitainer
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Core & Main Buffer Solution pH 4.00 Red 20 L Cubitainer
$126.95

Mfr. Part # BU5004-T

Product # 707129

Core & Main pH Buffer Solution, pH 2.00, Colorless, 4 L
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Core & Main Buffer Solution pH 2.00 Colorless 4 L
$69.90

Mfr. Part # BU5002-G

Product # 707125

Core & Main pH Buffer Solution, pH 2.00, Colorless, 500 mL
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Core & Main Buffer Solution pH 2.00 Colorless 500 mL
$17.80

Mfr. Part # BU5002-P

Product # 707124

Core & Main pH Buffer Solution, pH 12.45, Colorless, 500 mL
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Core & Main Buffer Solution pH 12.45 Colorless 500 mL
$20.60

Mfr. Part # BU1245-P

Product # 707150

Core & Main pH Buffer Solution, pH 12.45, Colorless, 4 L
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Core & Main Buffer Solution pH 12.45 Colorless 4 L
$80.55

Mfr. Part # BU1245-G

Product # 707151

Core & Main pH Buffer Solution, pH 10.00, Colorless, 500 mL
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Core & Main Buffer Solution pH 10.00 Colorless 500 mL
$17.80

Mfr. Part # BU9510-P

Product # 707148

Core & Main pH Buffer Solution, pH 10.00, Blue, 4 L Cubitainer
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Core & Main Buffer Solution pH 10.00 Blue 4 L Cubitainer
$57.70

Mfr. Part # BU5010-F

Product # 707146

Core & Main pH Buffer Solution, pH 10.00, Colorless, 4 L
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Core & Main Buffer Solution pH 10.00 Colorless 4 L
$69.90

Mfr. Part # BU9510-G

Product # 707149

Core & Main pH Buffer Solution, pH 10.00, Blue, 20 L Cubitainer
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Core & Main Buffer Solution pH 10.00 Blue 20 L Cubitainer
$126.95

Mfr. Part # BU5010-T

Product # 707147

Core & Main pH Buffer Solution, pH 4.0, Colorless, 500 mL
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Core & Main Buffer Solution pH 4.0 Colorless 500 mL
$17.80

Mfr. Part # BU9504-P

Product # 707130

Core & Main pH Buffer Solution, pH 7.00, Yellow, 500 mL
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Core & Main Buffer Solution pH 7.00 Yellow 500 mL
$12.95

Mfr. Part # BU5007-P

Product # 707134

Core & Main pH Buffer Solution, pH 7.00, Yellow, 4 L
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Core & Main Buffer Solution pH 7.00 Yellow 4 L
$52.65

Mfr. Part # BU5007-G

Product # 707135

Core & Main pH Buffer Solution, pH 4.00, Red, 500 mL
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Core & Main Buffer Solution pH 4.00 Red 500 mL
$12.95

Mfr. Part # BU5004-P

Product # 707126

Core & Main pH Buffer Solution, pH 10.00, Blue, 500 mL
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Core & Main Buffer Solution pH 10.00 Blue 500 mL
$12.95

Mfr. Part # BU5010-P

Product # 707144

Core & Main pH Buffer Solution, pH 4.00, Red, 4 L
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Core & Main Buffer Solution pH 4.00 Red 4 L
$52.65

Mfr. Part # BU5004-G

Product # 707127

Core & Main pH Buffer Solution, pH 10.00, Blue, 4 L
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Core & Main Buffer Solution pH 10.00 Blue 4 L
$52.65

Mfr. Part # BU5010-G

Product # 707145

Core & Main Buffer Pack, Buffer 4, 7, 10 and Electrode Storage Solution
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Core & Main Buffer Pack pH 4 7 10 and Electrode Storage Solution
$54.95

Mfr. Part # BUFPAK

Product # 707152

Thermo Scientific™ Orion™ Sulfide Anti-Oxidant Buffer (SAOB) for Sulfide Electrode, 475 mL, 941609
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Thermo Scientific Orion Sulfide Anti-Oxidant Buffer (SAOB) for Sulfide Electrode 475 mL 941609
$419.00

Mfr. Part # 941609

Product # 706196

Thermo Scientific™ Orion™ Sure-Flow Reference Electrode w/ Inner Chamber, 60 mL, 5/Pack, 900002
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Thermo Scientific Orion Inner Chamber Filling Solution for Double Junction Sure-Flow Reference Electrode 60 mL 5/Pk 900002
$156.00

Mfr. Part # 900002

Product # 706194

Thermo Scientific™ Orion™ Silver/Sulfide Electrode, Combination ISE, BNC, 9616BNWP
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Thermo Scientific Orion ionplus Sure-Flow Chloride Silver/Sulfide Electrode Combination ISE BNC 9616BNWP
$1,212.70

Mfr. Part # 9616BNWP

Product # 706195

Thermo Scientific™ Orion™ Replacement Module for Nitrate Half-Cell Electrode 9307BNWP, 930701
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Thermo Scientific Orion Replacement Module for Nitrate Half-Cell Electrode 9307BNWP 930701
$1,009.95

Mfr. Part # 930701

Product # 706193

Thermo Scientific™ Orion™ Sure-Flow™ Reference Half-Cell Electrode, Epoxy, 900200
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Thermo Scientific Orion Sure-Flow Double Junction Reference Half-Cell Electrode Epoxy 900200
$337.95

Mfr. Part # 900200

Product # 706191

Thermo Scientific™ Orion™ ISE Calibration Standard, 100 ppm Nitrate Standard, 475 mL, 930707
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Thermo Scientific Orion ionplus ISE Calibration Standard 100 ppm Nitrate Standard 475 mL 930707
$129.00

Mfr. Part # 930707

Product # 706192

Thermo Scientific™ Orion™ Nitrate Electrode, Combination ISE, BNC, 9307BNWP
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Thermo Scientific Orion Half-Cell Nitrate Electrode Waterproof BNC Connector 9307BNWP
$1,241.70

Mfr. Part # 9307BNWP

Product # 706190

Thermo Scientific™ Orion™ Nitrate Electrode, Combination ISE, Sure-Flow, 970701
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Thermo Scientific Orion Module for Nitrate Sure-Flow Electrode 9707BNWP 970701
$436.60

Mfr. Part # 970701

Product # 706189

Thermo Scientific™ Orion™ Optimum Results F Fill Solution for Nitrate and Nitrite ISE, 60 mL, 900046
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Thermo Scientific Orion ionplus Optimum Results F Filling Solution for Nitrate and Nitrite ISE 60 mL 900046
$157.00

Mfr. Part # 900046

Product # 706188

Thermo Scientific™ Orion™ Nitrate Interference Suppressor Solution for Nitrate Electrode, 930710
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Thermo Scientific Orion ionplus Nitrate Interference Suppressor Solution for Nitrate Electrode 930710
$134.00

Mfr. Part # 930710

Product # 706187

Thermo Scientific™ Orion™ ISA for Fluoroborate, Nitrate, and Perchlorate Electrodes, 475 mL, 930711
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Thermo Scientific Orion Ionic Strength Adjuster ISA for Fluoroborate Nitrate and Perchlorate Electrodes 475 mL 930711
$131.00

Mfr. Part # 930711

Product # 706186

Thermo Scientific™ Orion™ Nitrate Electrode, Combination ISE, BNC, 9707BNWP
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Thermo Scientific Orion ionplus Sure-Flow Nitrate Electrode Body Combination ISE BNC 9707BNWP
$1,368.45

Mfr. Part # 9707BNWP

Product # 706185