Micro Essential Lab LI-5900 Hydrion Short Range Lo Ion pH Test Kit, 5 - 9 pH Suitable for testing ponds, streams, tap water, waste water and unbuffered dilute solutions Total pH range: 5.0-9.0 The color chart is protected against wear by a special coating resulting in bright, sharp, durable colors Paper is prepared with ultra sensitive indicators and the dye content has been carefully calibrated for the size of the sample tube Kit contains one paper roll in dispenser, color chart and capped sample tube contained in a polypropylene case for easy portability