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Products > pH, EC and TDS > pH & EC Meter Calibration Solution

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Description Availability Price

General Hydroponics pH 4.01 Calibration Solution 8 Ounce (236 ml)

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our... More Details

Item Number: 211554

General Hydroponics pH 4.01 Calibration Solution 8 Ounce (236 ml)
Usually ships in 24 hours $5.35

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General Hydroponics pH 4.01 Calibration Solution 1 Quart (946 ml)

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our... More Details

Item Number: 211555

General Hydroponics pH 4.01 Calibration Solution 1 Quart (946 ml)
Usually ships in 24 hours $15.36

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General Hydroponics pH 7.0 Calibration Solution 8 Ounce (236 ml)

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our... More Details

Item Number: 211551

General Hydroponics pH 7.0 Calibration Solution 8 Ounce (236 ml)
Usually ships in 24 hours $5.35

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General Hydroponics pH 7.0 Calibration Solution 1 Quart (946 ml)

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our... More Details

Item Number: 211552

General Hydroponics pH 7.0 Calibration Solution 1 Quart (946 ml)
Usually ships in 24 hours $15.36

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General Hydroponics EC and PPM Calibration Solution 8 Ounce (236 ml)

Calibration solution for EC and TDS meters. 2930 microSiemens EC , 1500 PPM (NaCL scale) and 2190 PPM (442 scale) . General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among... More Details

Item Number: 211571

General Hydroponics EC and PPM Calibration Solution 8 Ounce (236 ml)
Usually ships in 24 hours $5.85

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General Hydroponics EC and PPM Calibration Solution 1 Quart (946 ml)

Calibration solution for EC and TDS meters. 2930 microSiemens EC , 1500 PPM (NaCL scale) and 2190 PPM (442 scale) . General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among... More Details

Item Number: 132794

General Hydroponics EC and PPM Calibration Solution 1 Quart (946 ml)
Usually ships in 3 to 5 days. $16.89

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Genesis pH Calib.Kit pH 4.01 & 7.01 - 8oz.

These solutions are used to calibrate pH meters to assure they are accurate and working properly. You should check your pH meter frequently because the properties of the meters membrane is constantly changing from normal use and aging. We recommend a two... More Details

Item Number: 132797

Genesis pH Calib.Kit pH 4.01 & 7.01 - 8oz.
Usually ships in 24 hours $11.43

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Genesis pH Calib.Kit pH 4.01 & 7.01 - 16oz.

These solutions are used to calibrate pH meters to assure they are accurate and working properly. You should check your pH meter frequently because the properties of the meters membrane is constantly changing from normal use and aging. We recommend a two... More Details

Item Number: 132798

Genesis pH Calib.Kit pH 4.01 & 7.01 - 16oz.
Usually ships in 24 hours $15.71

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Genesis pH 4.01 Buffer, 16 Ounces

Used to calibrate pH meters to assure they are accurate and working properly. You should check your pH meter frequently because the properties of the meters membrane is constantly changing from normal use and aging. ... More Details

Item Number: 133848

Genesis pH 4.01 Buffer, 16 Ounces
Usually ships in 5 to 10 days. $7.85

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Genesis pH 7.01 Buffer, 16 Ounces

Used to calibrate pH meters to assure they are accurate and working properly. You should check your pH meter frequently because the properties of the meters membrane is constantly changing from normal use and aging. ... More Details

Item Number: 133846

Genesis pH 7.01 Buffer, 16 Ounces
Usually ships in 5 to 10 days. $7.85

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Genesis 1413uS & 1500 PPM Calibration Kit, Twin Pack 2x8 Ounces.

The Genesis Lab manufactures calibration standards for Total Dissolved Solids and Electrical Conductivity for the purpose of keeping your solution concentration meters reading properly. ... More Details

Item Number: 134065

Usually ships in 5 to 10 days. $11.50

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Genesis 1413uS & 1500 PPM Calibration Kit, Twin Pack 2x16 Ounces

The Genesis Lab manufactures calibration standards for Total Dissolved Solids and Electrical Conductivity for the purpose of keeping your solution concentration meters reading properly. ... More Details

Item Number: 134064

Usually ships in 5 to 10 days. $15.70

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Bluelab pH Probe Cleaning & Calibration Kit

The Probe on Bluelab meter, monitor, Truncheon or controller must be kept clean. If the probe is contaminated or dirty, it affects the accuracy. The probe surface is where the instrument takes the reading of the solution and the information is sent back f... More Details

Item Number: 131881

Bluelab pH Probe Cleaning & Calibration Kit
Usually ships in 3 to 5 days. $30.93

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Hanna Solution HI50021P Cal Check Solution for HI9813-6 Meter, 20mL - Case of 25

These sachets are for use with the Hanna HI9813-6 Gro'Chek Portable pH/TDS/EC/Temp Meter. The Cal-Check feature of this meter utilizes the Cal-Check Solution in order to determine if the probe is in need of cleaning or replacement. The sach... More Details

Item Number: 134389

Hanna Solution HI50021P Cal Check Solution for HI9813-6 Meter, 20mL - Case of 25
Usually ships in 3 to 5 days. $37.67

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Hanna Solution HI70004P pH 4.01 Calibration, 25 x 20mL

Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-duty applications, y... More Details

Item Number: 131916

Hanna Solution HI70004P pH 4.01 Calibration, 25 x 20mL
Usually ships in 3 to 5 days. $26.53

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Hanna Solution HI70007P pH 7.01 Calibration, 25 x 20mL

pH 7 is the most frequently used pH buffer. All Hanna solution bottles come with a pH Vs. Temperature chart together with the production lot # and expiration date to guarantee maximum accuracy. Formulation Hanna pH buffers are made of Potassium Di... More Details

Item Number: 131917

Hanna Solution HI70007P pH 7.01 Calibration, 25 x 20mL
Usually ships in 3 to 5 days. $26.53

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Hanna Solution HI70030P 12880 S/cm Calibration, 25 x 20mL

12,880 S/cm (mho/cm) ... More Details

Item Number: 131918

Hanna Solution HI70030P 12880 S/cm Calibration, 25 x 20mL
1-2 Week Lead Time $26.53

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Hanna Solution HI70031P 1413 S/cm (EC) Calibration, 25 x 20mL

1,413 uS/cm (umho/cm) ... More Details

Item Number: 131919

Hanna Solution HI70031P 1413 S/cm (EC) Calibration, 25 x 20mL
Usually ships in 3 to 5 days. $26.53

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Hanna Solution HI70032P 1382 PPM@25C Calibration, 25 x 20mL

1382 ppm (mg/l) at 25C ... More Details

Item Number: 131920

Hanna Solution HI70032P 1382 PPM@25C Calibration, 25 x 20mL
Usually ships in 3 to 5 days. $26.53

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Hanna Solution HI7004L PH4 Calibration, 16 Ounces

Excellent Choice Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-... More Details

Item Number: 131921

Hanna Solution HI7004L PH4 Calibration, 16 Ounces
Usually ships in 3 to 5 days. $16.93

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Hanna Solution HI7007L PH7 Calibration, 16 Ounces

All Hanna solution bottles come with a pH Vs. Temperature chart together with the production lot # and expiration date to guarantee maximum accuracy. HI 7007L/C and HI 8007L/C are supplied with an analysis certificate. Formulation Hanna pH buffer... More Details

Item Number: 131922

Hanna Solution HI7007L PH7 Calibration, 16 Ounces
Usually ships in 3 to 5 days. $16.93

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Hanna Solution HI7031M 1413mS/cm. 230mL

conductivity solutions contained in opaque FDA approved bottle material which prevents light from interfering with the value of the solutions. 1,413 S/cm (mho/cm) ... More Details

Item Number: 131924

Hanna Solution HI7031M 1413mS/cm. 230mL
Usually ships in 3 to 5 days. $15.37

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Hanna Solution HI7032L 1382ppm TDS, 460ml

Testing solution ... More Details

Item Number: 131925

Hanna Solution HI7032L 1382ppm TDS, 460ml
Usually ships in 3 to 5 days. $15.36

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Hanna Solution HI7032M 1382ppm, 230ml

The conductivity solutions are made of high quality Potassium Chloride with different strengths. The solutions are standardized with a conductivity meter, calibrated by high purity NIST 999 Potassium Chloride in deionized water. The concentration is also ... More Details

Item Number: 131926

Hanna Solution HI7032M 1382ppm, 230ml
Usually ships in 3 to 5 days. $12.81

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Hanna Solution HI70442M 1500PPM, 230ml

1,500 ppm (mg/l) at 25C ... More Details

Item Number: 131927

Hanna Solution HI70442M 1500PPM, 230ml
Usually ships in 3 to 5 days. $14.34

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Hanna Solution HI70442P 1500 PPM@25C Calibration, 25 x 20mL

1,500 ppm (mg/l) at 25C ... More Details

Item Number: 131928

Hanna Solution HI70442P 1500 PPM@25C Calibration, 25 x 20mL
Usually ships in 3 to 5 days. $26.53

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WD-35653-01 Oakton Solution pH 4.01 Calibration, case of 20

20 pouches per box. ... More Details

Item Number: 134140

Usually ships in 3 to 5 days. $35.10

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WD-35653-13 Oakton Solution 15,000 uS Calibration, case of 20

Oakton Calibration Solution 15,000 uS ... More Details

Item Number: 134141

Usually ships in 3 to 5 days. $29.10

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MI10004 Milwaukee PH4 Solution - 20ml Packet - Case of 25

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, ins... More Details

Item Number: 131963

MI10004 Milwaukee PH4 Solution - 20ml Packet - Case of 25
Usually ships in 3 to 5 days. $19.67

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MI10007 Milwaukee PH7 Solution - 20ml Packet - Case of 25

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, ins... More Details

Item Number: 131964

MI10007 Milwaukee PH7 Solution - 20ml Packet - Case of 25
Usually ships in 3 to 5 days. $19.67

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MI10032 Milwaukee 1382 TDS Solution - 20ml Packet - Case of 25

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, inse... More Details

Item Number: 131966

MI10032 Milwaukee 1382 TDS Solution - 20ml Packet - Case of 25
Usually ships in 3 to 5 days. $19.67

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MI10442 Milwaukee 1500 PPM Solution - 20ml Packet - Case of 25

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, ins... More Details

Item Number: 131967

MI10442 Milwaukee 1500 PPM Solution - 20ml Packet - Case of 25
Usually ships in 3 to 5 days. $19.67

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MA9007 Milwaukee PH7 Solution, 220ml

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, inse... More Details

Item Number: 131969

MA9007 Milwaukee PH7 Solution, 220ml
Usually ships in 3 to 5 days. $9.39

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MA9062 Milwaukee 1382 PPM TDS solution, 220ml

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, inse... More Details

Item Number: 133166

MA9062 Milwaukee 1382 PPM TDS solution, 220ml
Usually ships in 3 to 5 days. $9.39

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Milwaukee 1413 mS Packet, case of 25

Available in 220ml bottles and 20ml sachets. Traditional buffer solutions are packed in 220ml leak-proof bottles and are recommended for lab application. Sachets are sealed against light and air and are ideal for on-the-spot calibration. Simply open, inse... More Details

Item Number: 134894

Usually ships in 3 to 5 days. $18.95

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HM Digital HMC1000 1000ppm Calibration Solution - 3 Ounce

NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner. ... More Details

Item Number: 131939

HM Digital HMC1000 1000ppm Calibration Solution - 3 Ounce
Usually ships in 3 to 5 days. $5.95

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