HANNA instruments` buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards.
The 20 mL sachets are single-dose whereas, for more demanding applications, you may choose between packages of 230 mL, 500 mL, 1 Liter or 1 Gallon (3.78 L).
All pH 4 solutions show batch number, expiration date and the correlation table between pH and temperature. HI 5004, HI 6004, HI 7004L/C, HI 8004L/C and HI 70004C are supplied complete with certificate of analysis.
This buffer value is widely used in water purification plants, in the food industry and where ever the pH is expected to be slightly acidic.
Hanna Instruments USA Aquarium Supplies
Hanna Instruments is a leading manufacturer of analytical aquarium instrumentation. They were founded in 1978 and are headquartered in Woonsocket, Rhode Island. When Hanna introduced pH Electronic Paper in 1986 it literally revolutionized the world of testing by allowing millions of people in various industries to test for pH in a simple, accurate and affordable way. Hanna employees are constantly challenging themselves to improve on existing technology and to invent new testing techniques with the common goal to simplify analytical testing. This applies not only to instrumentation, but also to sensors development, reagents and chemicals. Hanna also believes in controlling the quality of their products from inception to delivery so they manufacture everything themselves, from meters and electrodes to chemical reagents and buffer solutions.
Hanna Instruments pH Calibration Solution, 20 ml Sachet (25pcs)
Convenient and precise
Posted: 7/24/2014 from NEW YORK, NY UNITED STATES
These calibration solution sachets are really handy to use as they are big enough to fit the probe in them, but small enough to enable putting them in a cup of water to avoid temperature fluctuations. Their long shelf life enables to store them for a couple of years.
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7.01 pH Calibratio Solution
Posted: 1/9/2009 from BINGHAMTON, NY UNITED STATES
Just poured it in a glass and put the instument in, waited a couple minutes, and whalaa. Calibrated.
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