</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (fhovie @ May 20 2003, 04:18 AM)</td></tr><tr><td id='QUOTE'> Mixing your own fixer is pretty easy. Sodium Thiosulphate - 240 grams, Sodium Bisulphate - 23 grams - water to make 1 liter. </td></tr></table><span class='postcolor'>
This is by far the most cost effective way of purchasing fixer. I purchase 25KG Thiousulphate about every 4 years for less than £50 (that was the price 3 years ago) and Bisulphate is also inexpensive and easily available. A cheap set of kitchen scales will suffice for weighing for the exact quantities are not critical. For years I have not used scales when making fixer, I measure the quantities in graduates, having made a note of the approximate levels in the graduates once when it was correctly weighed. I hasten to add that I do use a laboratory balance when weighing out quantities for developers.