Kodak/ Photographers formulary Polysulphide T-8 toner

[imyself]

Hi everyone,
I wanted to make this toner based on the widely available and simple formula (7.5 g liver of sulphur + 2.5 g sodium carbonate in 1000 ml of water). I've found two forms of LOS; the traditional lump form and a long lasting LOS gel (made for jewelry and metal workers for creating patina). The lump form degrades quite rapidly and has a relatively short shelf life so I was wondering if anyone has any experience using the gel form which is formulated to extend its shelf life. The MSDS that I could find online did not specify the additional components of the gel aside from the main component (sulfurated potash aka liver of sulphur).
Regards
Adam

 

[Gerald C Koch]

You need liver of sulfur. There may be things in the gel which would have an adverse effect on the print. It keeps reasonably well in a sealed glass container.