Laboratory Education
Comparator Paper pH 5.2 - 6.7
Johnson Test Papers Comparator Paper pH 5.2 - 6.7, pH paper- for use in laboratory,and education Available as 100 books of 20 strips, 1 reel (5m x 7mm) ,and 200 strips per pack.
Johnson Test Papers Comparator Paper pH 5.2 - 6.7, pH paper- for use in laboratory,and education Available as 100 books of 20 strips, 1 reel (5m x 7mm) ,and 200 strips per pack.