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Subject: [DCHAS-L] Pump for HPLC Flammable waste

Date: Feb 4, 2026 15:36 UTC

Author: Margaret Rakas <mrakas**At_Symbol_Here**SMITH.EDU>

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Date: Feb 5, 2026 19:50 UTC

Author: James Kaufman <jkaufman**At_Symbol_Here**LABSAFETYINSTITUTE.ORG>

From: James Saccardo <James.Saccardo**At_Symbol_Here**CSI.CUNY.EDU>

Subject: Re: [DCHAS-L] Pump for HPLC Flammable waste

Date: Feb 4, 2026 22:01 UTC

Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>

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Demystify: 

Margaret,

Our HPLC operators collect effluent into a 1 gallon in a secondary container. These are consolidated into 5 gallon DOT rated drums and direct shipped under a waste profile. The cost is about $100. 5 gal.

 

I do not like consolidation of 5 gallons containers into drums, for us doing so would save a couple of hundred dollars annually at best. We have a walk in hood area with bonding if we wanted to do so, but we rarely bulk HPLC solvents, we probably do not have the volume you do.

 

You might want to ask you TSDF or transporters if they would pour off on the day of pick up. We use Veolia Environmental Services and they will pour off at no extra charge. Most importantly with pouring off HPLC waste, you need to consider ventilation and exposure and ask yourself, is it really worth it.

 

Any waste consolidation should never be done in the lab, but rather in your Main Accumulation Area  (180 day area if you are an SQG). If you are bulking to cut costs, weigh it against the man hours and pumps purchased and the increased risks involved.

 

Not sure I answered your question, but I am not sure that I would relish pumping haz waste from one container to another. I hope you find a good solution.

 

James

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Margaret Rakas
Sent: Wednesday, February 4, 2026 10:36 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] Pump for HPLC Flammable waste

 

* External Sender - Proceed Cautiously with Links and Attachments. *

Good morning,

 

We have several waste containers for HPLC waste that are directly 'plumbed' to the equipment (see example).

 

Because it is a 5 gallon can and we don't pour off into larger drums (for one thing, the weight of the nearly-full container), in the past we've used a hand-operated fuel oil pump; however the gasket wears out quickly and the time to empty the container is significant.

 

How do you handle this if you don't pour off into a 30- or 55-gallon drum?  Is there a pump or other method you use?  I am concerned that a pump used to dispense flammables might not have the right fittings for the container we use.  However, if you successfully use this pump with this type of waste receptable please let me know!

 

Many thanks,

Margaret

 

--

Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Senior Director
Clark Science Center

Smith College
413-585-3877 (p)

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