There seems to be some confusion among suppliers as to hazmat regulations. The DOT does not consider 2 lb containers of many chemicals to be hazardous even though larger containers are so classified. For example, you can purchase as many 2 lb containers of potassium hydroxide at one time as you wish without a hazmat fee but the purchase of a single 5 lb container would require a fee. Makes a lot of sense doesn't it. Many companies find it easier not ship anything in any size rather than to deal with the regulations. Thus you find that B&H Photovideo will not ship Rodinal (contains potassium hydroxide) whereas Adorama will ship it. Jerry -----Original Message----- From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx]On Behalf Of Matthew Gaylen Sent: Tuesday, September 21, 2004 9:08 AM To: pure-silver@xxxxxxxxxxxxx Subject: [pure-silver] Re: tank and tray cleaner Turns out you can purchase sulphuric acid from some folks without a hazmat charge where some folks must charge an extra $20. And some folks require a DEA registration. I went so far as to leave a message with the field office in Chicago--but they never called me back. Anyway, I have about 3 lifetime supplies of tank and tray cleaner consisting of 8 grams potassium dichromate mixed with 96 ml sulphuric acid and 900 ml distilled water. Kills developer tray stains on contact. Contact me off list if you want a liter. Best, joe suburbs the post modern hyper rural sub urban anti hero and vertiginous surrealist ================================================================================ ============================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.