Learn how to use this product RNA Saliva Collector is an easy-to-use, economical RNA saliva collection device designed to store and stabilize RNA from 1ml Saliva samples. The collection tube is pre-filled with a fully tested and Non-Toxic stabilization buffer. The tube has a simple screw-on funnel that delivers the saliva sample directly and quickly into the buffer. It requires no specialist supervision, making remote sampling possible. Clear, legible markings on the GeneFiXâ„¢ collection tubes indicate the correct volume of Saliva to be delivered, and the patented design funnel prevents spillages and saliva flows back even when knocked over. The collection tubes can withstand the defined physical pressures specified for leakproof sample transport.