Analyze DNA and protein samples at 260 nm or 280 nm in disposable plates! Proprietary resin has optical properties similar to quartz. Read down to 230 nm without buying or washing fragile, expensive quartz plates. RNase free, DNase free, non-pyrogenic, and free of DNA polymerase inhibitors. Flat bottom; working/total volume: 25-340/392 μl. Ten plates per sleeve, 40 per case.