Description

Box of 10 books of 20 leaves 65x10mm. colour- matching chart are printed on the cover of each book.

TYPE              SPECIFIC RANGE                WIDE RANGE           FULL RANGE

1.                  2.0 to 4.5 pH                           2.0 to 10.5pH              1.0 to 14.0 pH.
2.                  3.5 to 6.0 pH                           Multi range contains each of above 6 ranges.
3.                  5.0 to 7.5 pH
4.                  6.5 to 9.0 pH
5.                  8.0 to 10.5 pH