Naphrax is made exclusively by Brunel Microscopes Ltd in the UK who distribute it Worldwide in versions suitable for the UK and Export.
It is available in 15ml (£44) and 250ml (£301) amounts.
From our online shop by credit card, Paypal or BACS payment or in the case of UK universities by Purchase Order number -
Due to carrier restrictions Naphrax without toluene is supplied for our overseas customers with instructions about how the solvent is added on receipt. Prepayment is required unless you already have an account with us -
A copy of the instructions for use and how to add toluene for overseas customers is available on line -
To download a MSDS sheet for Naphrax -
Brunel Microscopes Ltd
2 Vincients Road
Bumpers Farm Industrial Estate
Chippenham Wiltshire SN14 6NQ
Telephone: +441249 462655
The mountant of choice for diatom microscopy assays
Diatoms are single-
In solution the refractive index of Naphrax is 1.65. As part of the mounting process the naphrax is heated and the solvent toluene is driven off and the refractive index rises to 1.73.
The microscopy of diatoms benefits significantly from the use of phase contrast and dark ground illumination systems.