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Calibration Solutions

Myron L Water Quality Test Calibrations and Buffer SolutionsHanna Instruments Water Quality Tester Calibration and Buffer Solutions

Conductivity Standard Solutions and pH Buffers are used for factory calibration of water quality testers. Regular use of these solutions is recommended to ensure specified instrument accuracy. Frequency of conductivity recalibration depends upon use, but once every month should be sufficient for an instrument used daily. pH models, depending upon use, should be recalibrated with pH 7 Buffer every 1-2 weeks, and checked with pH 4 and/or 10 Buffers at similar intervals.

TDS Calibration Solutions by Myron L

442 Natural Water™ Standard Solution is NIST Traceable and is used in calibrating many test instruments. It is the best choice when measuring boiler and cooling water samples, city water supply, lakes, wells, etc. “442” refers to the combination of salts mixed with deionized water to comprise this standard: 40% sodium sulfate, 40% sodium bicarbonate, 20% sodium chloride. A combination of standard salts is necessary since natural water salt type and concentration can vary greatly by location.

Myron L Model No. Old AMI Number Calibration Value

Volume
442-15Q T-TC0015 15ppm/23.8µS

1 Quart
442-30Q T-TC0030 30ppm/46.7µS

1 Quart
442-300Q T-TC0300 300ppm/445µS

1 Quart
442-500Q T-TC0500 500ppm/731µS

1 Quart
442-1500Q T-TC1500 1,500ppm/2,060µS

1 Quart
442-3000Q T-TC3000 3,000ppm/3,900µS

1 Quart
442-3000Q T-TC30000 30,000ppm/30,100µS

1 Quart
Myron L TDS Tester Calibration Solution

pH Buffer Solutions by Myron L

pH Buffer Solutions 4, 7 and 10 are mold inhibited and accurate to within + 0.01 pH units @ 25°C. Myron L Buffers are traceable to NIST certified pH references and are color-coded for instant identification.

Myron L Model No. Old AMI Number

Calibration Value

Liquid Color

Volume
PH4Q T-PHB4

pH 4

Red

1 Quart
PH7Q T-PHB7

pH 7

Yellow

1 Quart
PH10Q T-PHB10

pH 10

Blue

1 Quart
Myron L pH Meter Calibration Buffer Solution

ORP Standard Test Solutions by Hanna

ORP standard solutions allow you to test the precision of ORP electrodes. For example, by immersing the electrode in HI 7020 solution, you should read within the 200 to 275 mV range (@20°C/68°F). If the reading is outside the indicated interval, clean and condition your ORP electrode in HANNA® pretreatment solution.

Model No. Description

Volume
HI7020M ORP Test Solution at 200/275 mV (@20°C)

230 mL bottle
HI7021M ORP Test Solution at 240 mV (@20°C)

230 mL bottle
HI7022M ORP Test Solution at 470 mV (@20°C)

230 mL bottle
HI7092M Oxidizing Pretreatment Solution

230 mL bottle
HI7091M Reducing Pretreatment Solution

230 mL bottle
Hanna Standard Solution for ORP Meter Calibration