PH PENCIL INST-CHK PH 0-13 , Pack of 3

Details

Insta-Chek Ph Pencil^ Pack of 3. jumbo, non refillable, paper wrap pencils that reveal the surface ph of any solid to the nearest ph unit. Lead size 3/16in x 6.75in. Readings from ph 0-13 with 14 brilliant, easy to read, color changes.