Ph indicator strips Non-bleeding .br ph 6.5-10.0 special indicator pH 6.5 - 6.8 - 7.1 - 7.4 - 7.7 - 7.9 - 8.1 - 8.3 - 8.5 - 8.7 - 9.0 - 9.5 - 10.0. Non-CE marked product: Not for in-vitro use VWR INTERNATIONAL VWR