Extech 650470  

Extech 650470: Tripak Dry Powder Buffer Capsules (4, 7 and 10pH)

Convenient calibration solutions in capsules for pH meters

The 650470 is a set of Tripak Dry Powder Buffer Capsules. Provides convenient calibration solutions in capsules for pH meters. Includes 3 vials (10 capsules each) of 4, 7 and 10 pH dry powder buffers and one dispenser vial of color key preservative.