Square Diameter

•  3 x 3 mm (1)
•  4 x 4 mm (1)
•  5 x 5 mm (1)
•  6 x 6 mm (1)
•  6.35 x 6.35 mm (1)
•  7 x 7 mm (1)
•  8 x 8 mm (1)
•  9.52 x 9.52 mm (1)
•  10 x 10 mm (1)
•  12 x 12 mm (1)
•  12.7 x 12.7 mm (1)
•  14 x 14 mm (1)
•  15 x 15 mm (1)
•  16 x 16 mm (1)
•  18 x 18 mm (1)
•  19 x 19 mm (1)
•  20 x 20 mm (1)
•  22 x 22 mm (1)
•  1 inch (1)

pH-Wert max.

•  pH 9 (1)
•  pH 11 (1)
•  pH 13 (1)
•  pH 14 (5)