This kit from GFS is the newest addition to the In-Spec® product line of spectrophotometer standards.
It is designed specifically for the popular short pathlength/small sample spectrophotometers that can be used for DNA/RNA quantification tests. The kit comes with two standards that allow you to verify the photometric accuracy of your instrument at 260nm, 280nm, and 320nm.
It is designed to be a cost effective and easy to use validation check. The standards are NIST-traceable with a 1 year shelf life and come in 8mL bottles.