pH Testing Strips - Full Range 1-14 - Universal Indicator 100 Papers - Free P&P
Johnson Test Papers Universal Indicator Paper pH 1 - 14. Johnson Universal Indicator Paper Reel 5m x 7mm Test paper Ph 1 - 14. pH range of : 1-2-3-4-5-6-7-8-9-10-12-14. • Colour chart included.