SPI-Chem Ultra-Low Viscosity Kit, n-OSA Formulation, 355 ml Total Volume
Kit contains (355 ml):
n-OSA: 200 ml
ERL 4221: 100 ml
DMAE: 30 ml
The SPI-Chem™ Ultra-Low Viscosity Kit was formulated for those in need of a resin system that had a viscosity even lower than the very popular "low viscosity" kits based on the formulations published by Spurr [Spurr, A.R., J. Ultrastructural Research 26, 31-42 (1969)]. The ultra-low viscosity is possible because of the use of newly recognized ingredients n-OSA (n-octenyl succinic anhydride) and ERL 4206 (vinylcyclohexene dioxide), for imparting these characteristics to the final resin formulation. Note that because of the discontinuation by the manufacturer of ERL 4206, we use the replacement for ERL 4206 which is ERL 4221.
We are often times asked, when low viscosity is required, which would we recommend? Generally speaking, you can get good results using the more conventional "Spurr formulations". So, our general recommendation is to try the Spurr formulation first. If you feel you need lower viscosity, then take as the next step the SPI-Chem™ Ultra-Low Viscosity Kit. Don't forget that the lowest viscosity of all embedding kits, to our knowledge, and certainly it was the first one of its class on the commercial market, are the SPI-Chem™ "Low Acid" (Water Soluble) GMA Kits. The biggest advantage of the GMA kits is that the viscosity is lower than even that of water! Where lipid-containing samples are concerned, the SPI-Chem™ Low Acid HPMA Kits might be a more appropriate choice.
Examples of product usage:
The SPI Chem Ultra Low Viscosity Kit has been successfully used for impregnating microcracks in concrete, a feat that anyone who has tried it would know to be very very difficult with other resin systems (see Application Note).
An understated potential safety risk:
We are addressing now the cured block, something that to most people is about as inert of a material as one will find. But the standard practice in many laboratories is to use a small jeweler's (or even a small hack) saw to cut the block down to the right size, sometimes even to shape it. We want to address the dust that is generated and how its exposure can and should be minimized.
Note that this kit can be shipped as an shipment, hence even for most foreign destinations, the actual costs for shipping are not much more than for any other shipment that did not contain "dangerous goods".