Primary Turbidity Standard
- Greener - Safe and non-toxic
- Two year shelf life
- Cost Effective
- Easy to us
- Custom standards available
- Traceable to Formazin

ProCal turbidity standards are pre-diluted, factory certified, and ready for use with not only the HF scientific turbidimeter product line but with other manufacturer's instrumentation.  The ProCal standard formulation utilizes a preservative that enhances stability, yet is safe and biodegrades rapidly in aquatic environments.

Micro TOL Series

HF Part #	Kit	NTU Value(s)	Bottle Size	Price	Buy  Now
39953	√	.02, 10 & 100 (for Micro TOL 3)		$195.00
39957	√	.02, 10 & 1000 (for Micro TOL 1, 2, 4)		$195.00
52050		0	1 liter	$40.10
52060		0	1 gallon	$110.00
60002		.02		$72.00

Micro 200 Series

HF Part #	Kit	NTU Value(s)	Bottle Size	Price	Buy Now
39830	√	.02, 100, 400 & 1000 (Micro 200 BW only)		$245.00
39820	√	.02, 4, 10, 40 & 100		$245.00
39828	√	.02, 4 & 10		$195.00
39826		4		$67.50
39825		10		$67.50
39823		40		$67.50
39824		100		$67.50
60002		.02		$72.00

DRT-200 Series

HF Part #	Kit	NTU Value(s)	Bottle Size	Price	Buy Now
39953	√	.02, 10 & 100 (for DRT-200E)		$225.00
60002		.02		$72.00