Digital BW, The Print

Dunno, but this is normal behavior of the product.  All you needed to do, is gently warm the product and stir until clear. The product does have a 'cloud' temperature point, but that does not diminish it's qualities.

All it is, is a solution of Triton-X 100, a common surfactant used in many household products, and a solubilizer.

Most of these solubilizer do become cloudy as the temperature drops, and do require an above room temperature to bring it back into solution.  Hence more dilute solutions are sold to the general public for easier handling.

But, hey, a little chemical background can save you money, buy the concentrate and mix 'secundum artum'.

The Photoflo 600 Rx
300-400 Water
370 Ethylene glycol
250-300 Triton X-100, the product's active ingredient
Total = 1000
The water / Triton blend are not critical, only need to be in that range.

The final WORKING solution should be:
990 Water
5 Ethylene glycol
5 Triton X-100
Total = 1000

There are many Tritons (aka Igepal), some which look like waxy cream at room temperature.  They have different o/w - w/o capabilities, and th X-100 is the most common.

As you can see the Ethylene glycol/Triton amount to only a 0.5% solution. There is really no need for the ethylene glycol, except to pretty up the product so that the concentrate look clear.  In any event, if you get your hands on pure Triton, and DO make a 0.5% solution with mixing and gentle heat, the product will be clear.

Higher concentration would cause streaking.... the streaks being the deposition of glycol and Triton on the surface.

FWIW, this is what I used in the B&W days.



----- "Tony Sleep" <TonySleep@...> wrote:

> On 09/12/2010 Louis de Stoutz wrote:
> 5L. 5L was only available for Photoflo 600, which was best avoided : 
> stored at low temps it developed a flocculate which rendered it
> unusable. 
> (It cost a mint and I ended up having to throw away about 4.8L)