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<p>[QUOTE=&quot;Oldhoopster, post: 2774763, member: 84179&quot;]I suggested the avoiding the baking soda solution to simplify the process.&nbsp; For people without experience in a Chem lab setting, the less chemicals to play with, the less chance of making mistakes.&nbsp; <u>Thorough</u> rinsing in distilled water should dilute and wash away any remaining thiourea and sulfuric acid, particularly in the concentrations found in commercially available dips.&nbsp; (De-ionized water would probably be better, but most people don’t have access to it)</p><p><br /></p><p><br /></p><p>If you’re doing precision dips for very short periods of time or with higher concentrations of active chemicals, then a baking soda (sodium bicarbonate) solution should neutralize the H2SO4 a little faster than ordinary rinsing.&nbsp; I don’t know if it has any effect on the thiourea reaction with the silver (where are those chemists when you need them [USER=33176]@Kentucky[/USER]), but the baking soda solution probably just rinses it off.</p><p><br /></p><p><br /></p><p>If you&#039;re new to playing with chemistry, you probably don’t need to use baking soda AS LONG AS YOU RINSE AND DRY THOROUGHLY. Keep it simple IMO.&nbsp; If you have the chem lab or coin conservation experience (Dr. White&nbsp; for example), then you probably know when to use a neutralizing solution.[/QUOTE]</p><p><br /></p>

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