Hydrion Buffer Chemvelopes, Powdered Ingredients Make Precision Buffers: ±0.02ph At 25°C, Pack Of 5

Details:

In capsules or packets (chemvelopes)dissolve in distilled water: 100ml for capsules, 500ml for packetsdirectly traceble to nist standardsstandard capsules come in vials of 10, five vials per pack. Tri-chek capsule set includes one vial of 10 capsules each for ph 4, 7, and 10 bufferstri-chek chemvelope set includes three pouches each for ph 4 and 10, four pouches for ph 7tri-chek sets also include dispensing dropper bottle of color key/buffer preservative; add to buffer to inhibit mold and to color-code solution: red-orange for ph 4, green for ph 7, blue for ph 10