Hanna pH 4.01 Calibration Solution, 20 ml, case of 25 lighting-&-electrical-components Daisy chain up to 5

Daisy chain up to 5 units (4 add-on units MTMDA plus this Commercial Mat)

Create your own concentrate at home with the compact Rosinbomb Rocket that is only 10 in tall and weighs 13 lbs

square-wave digital ballast designed specifically for the 315W high intensity ceramic halide lamp

Designed to prevent equipment with counter active functions from operating at the same time

Hanna pH 4.01 Calibration Solution, 20 ml, case of 25 lighting-&-electrical-components Daisy chain up to 5Hanna'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, you can choose from the popular 230 ml, 1 liter, or 1 gallon containers. Now the pH 4 buffers carry lot #, expiry date as well as pH C chart on every bottle. HI 7004L C and HI 8004L C are also supplied