Helix capillary adaptor cells feature a patented design that permits ultra precise spectrophotometric and fluoroscopic DNA measurements using undiluted samples as small as 3 micro liters, one tenth the mass required for measurements in ordinary cuvettes. These highly sensitive cells can detect as little as one nanogram of DNA.

Absorbance and Fluorescence Cells

Helix offers adapter cells for measuring both absorbance and fluorescence using standard spectrophotometers and fluorometers. Each cell contains two fused silica cylindrical lenses, one for focusing a light beam onto the capillary, and the other for collecting and directing the transmitted beam for optimal detection. The fluorescence cells also employ front surface mirrors to reflect and concentrate both the excitation light and the light emitted from the sample.

• precise measurements from undiluted samples as small a 3 micro liters
• quartz optics for optimum light throughput
• sealable, disposable capillaries for easy handling and fast cleanup
• recoverable samples for maximum economy
• can improve absolute detection limit

Convenient cell kits include one cell, a vial of either quartz or glass capillaries, an optional supply of capillary sealant, and an Allen wrench for disassembling and cleaning the cell.