The Question

From: "J. Kelly Nolan, EST Coordinator" <ESTeam@worldnet.att.net>
Subject: [volmonitor] Preservative
To: VOLMONITOR <volmonitor@lists.epa.gov>

Hello- Does anyone happen to know a supplier/distributor for ethanol to be used for macroinvertebrate preservation? We would like to stop using denatured alcohol as it fumes quickly overpower our sampling identification sessions.

Regards,
J. Kelly Nolan
Capital Region Coordinator
Hudson Basin River Watch

Responses

From: Kevin_Smith@B-F.com
Subject: [volmonitor] Re: Preservative
To: VOLMONITOR <volmonitor@lists.epa.gov>

Although it is a more expensive option and if you only need small amounts, you can use Everclear Brand spirit from your local liquor store. It is 95% ethanol and can be cut to the appropriate percentage for your needs. This will be "tax paid" and (legally) side-steps any of the regulatory requirements of purchasing ethanol for scientific purposes. You could also use vodka but this can generally only be found at concentrations of 50% ethanol or less which may not be sufficient for preservation.
Is your organization is working in association with a local University's science department that is already authorized to purchase lab grade ethanol. They may be willing to provide limited quantities for your macroinvertebrate sampling.

Kevin Smith

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