Essentials Calibration 7.0 8oz

Necessary to calibrate pH & EC/CF meters. Use ESSENTIALS calibration solutions to calibrate pH and EC/CF meters. New CF Standard now makes it easier to calibrate as it is set to read CF28 at 20 degrees (room temperature) and not 28 degrees which is th... More Details

Item Number: 136554

Essentials Calibration 4.01 8oz

Necessary to calibrate pH & EC/CF meters. Use ESSENTIALS calibration solutions to calibrate pH and EC/CF meters. New CF Standard now makes it easier to calibrate as it is set to read CF28 at 20 degrees (room temperature) and not 28 degrees which is th... More Details

Item Number: 136555

Essentials Calibration Qt 7.0

Essentials CF Standard (CF 28) 2.8ms is a 30ml sachet, single use CF/EC solution to calibrate CF/EC meters. Essentials pH buffers are a known solution of a certain pH value designed to test the accuracy of pH meters used to measure the pH of a nutrien... More Details

Item Number: 136552

Essentials Calibration Qt 4.01

Essentials CF Standard (CF 28) 2.8ms is a 30ml sachet, single use CF/EC solution to calibrate CF/EC meters. Essentials pH buffers are a known solution of a certain pH value designed to test the accuracy of pH meters used to measure the pH of a nutrien... More Details

Item Number: 136553

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 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 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 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 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 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

Bluelab 4.0 250 ML Calibration Solution

The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH mete... More Details

Item Number: 131884

Bluelab 4.0 500 ML Calibration Solution

The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH mete... More Details

Item Number: 131885

Bluelab 7.0 250 ML Calibration Solution

The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH mete... More Details

Item Number: 131886

Bluelab 7.0 500 ML Calibration Solution

The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH mete... More Details

Item Number: 131887

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

Hanna pH Calibration Solution HI70007P pH 7 - 20 mL Individual Packets, Box of 25

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 pH Calibration Solution HI7007L pH 7 - 500 mL Bottle

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 pH Calibration Solution HI70004P pH 4 - 20 mL Individual Packets, Box of 25

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 pH Calibration Solution HI7004L pH 4 - 500 mL Bottle

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 EC Calibration Solution HI70031P 1413 µS/cm - 20 mL Individual Packets, Box of 25

1413 uS/cm (umho/cm) 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. T... More Details

Item Number: 131919

Hanna EC Calibration Solution HI7031M 1413 µS/cm - 230 mL Bottle

1413 uS/cm (umho/cm) 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. T... More Details

Item Number: 131924

Hanna EC Calibration Solution HI7031L 1413 µS/cm - 500 mL Bottle

Conductivity Calibration Solution The 1413 S/cm calibration solution is best suited for general use. This solution is also available in combined kits with HANNA pH 7 buffer for easy calibration of multiparameter instruments. ... More Details

Item Number: 136605

Hanna EC Calibration Solution HI70030P 12880 µS/cm - 20 mL Individual Packets, Box of 25

1413 uS/cm (umho/cm) 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. T... More Details

Item Number: 131918

Hanna PPM Calibration Solution HI70032P 1382 PPM - 20 mL Individual Packets, Box of 25

1382 PPM using a 0.5 conversion factor at 25C. 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 Chlo... More Details

Item Number: 131920

Hanna PPM Calibration Solution HI7032M 1382 PPM - 230 mL Bottle

1382 PPM using a 0.5 conversion factor at 25C. 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 Chlo... More Details

Item Number: 131926

Hanna PPM Calibration Solution HI7032L 1382 PPM - 500 mL Bottle

1382 PPM using a 0.5 conversion factor at 25C. 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 Chlo... More Details

Item Number: 131925

Hanna PPM Calibration Solution HI70442P 1500 PPM - 20 mL Individual Packets, Box of 25

1500 PPM using a 0.7 conversion factor at 25C. 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 Chlo... More Details

Item Number: 131928

Hanna PPM Calibration Solution HI70442M 1500 PPM - 230 mL Bottle

1500 PPM using a 0.7 conversion factor at 25C. 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 Chlo... More Details

Item Number: 131927

Hanna PPM Calibration Solution HI70442L 1500 PPM - 500 mL Bottle

TDS solution are produced with high-quality potassium chloride in various concentrations. They are standardized using a conductivity meter calibrated with NIST potassium chloride. ... More Details

Item Number: 136606

Hanna Solution HI50021P Cal Check Solution for HI9813-6 Meter - 20 mL Individual Packets, Box 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

Oakton Buffer pH 4.01 Calibration 20 mL pouches, case of 20

20 pouches per box. OAKTON pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Each box contains twenty 20 mL pouches. Dimensions: 4.5"L x 5"W... More Details

Item Number: 134140

Oakton Buffer 15,000 uS Calibration 20 mL pouches, case of 20

Oakton Calibration Solution 15,000 uS OAKTON Conductivity "Singles" pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Pouches are labeled wi... More Details

Item Number: 134141

Oakton Buffer 4.01 pH 500ml

Oakton(r) buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77F (25C). Store buffers away from direct sunlight. ... More Details

Item Number: 135729

Oakton Buffer 7.00 pH 500 ml

Oakton(r) buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77F (25C). Store buffers away from direct sunlight. ... More Details

Item Number: 135730

Oakton Buffer 1413 US Solution 500 ml

Standards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within 0.5% and are referenced to 25C. ... More Details

Item Number: 135731

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

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

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

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

Milwaukee PH4 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, ins... More Details

Item Number: 131968

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

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

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

HM Digital HMC1000 1000ppm Calibration Solution - 3 Ounce

For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. NaCl calibration solution. Comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner. ... More Details

Item Number: 131939

27.7 CF Calibration Solution - 2 ounce

This 27.7 CF calibration solution is perfect for calibrating your IntelliDose. Can also be used to calibrate EC to 2.77. ... More Details

Item Number: 134027

Hanna EC Calibration Solution HI7030M 12880 µS/cm - 230 mL Bottle

HANNA HI 7030M 12880 S/ cm conductivity solution (mho/ cm), 0.23 L HI7030M ... More Details

Item Number: 134430

Hanna Sodium Chloride (NaCl) Standard Solution 30 g/L - 230 mL Bottle

Salinity (NaCI) Calibration solution 30g-l. ... More Details

Item Number: 134108

Hanna Electrolyte Solution, 3.5M KCl + AgCl 4 x 30 mL bottles

The electrolyte level in refillable electrodes should be checked before performing any measurements. If the level is low, refill with the proper electrolyte solution to ensure the correct electrode performance. This simple maintenance helps guarantee the ... More Details

Item Number: 134817