The HI3812-100 are reagents for the determination of total hardness (as CaCO3) by titration with the HI3812 Total Hardness Chemical Test Kit. There are enough reagents for approximately 100 tests to be used with Hanna's test kit. These high-quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.

• Pre-made reagents for ease of use
• Prepared with high purity chemicals
• Marked with expiration date and lot number for traceability