Frequently Asked Questions
Can you reuse pipette tips?
Yes, if pipetting from the same solution (into a clean receptacle) and the tip is kept clean. Though, the quantity may not be accurate after the first usage (pre-wetting the tip may help).
How to dispose of highly alkaline salts?
If the pH is under between 2 and 12.5, neutralize or dilute to within a pH of 5 and 10 and drain with water. Other hazardous waste conditions may apply and render the solution unable to be drained.
GHS Pictograms
Container Labeling
- Primary Container
- GHS Pictogram
- A product identifier
-
Name and Number
- Hazard statement
-
May be harmful if swallowed
- Signal word
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Danger
- Precautionary statements
-
Wear protective gloves
- The name and address of the supplier.
- Add the names of the owners.
- Working Container Secondary Container
- Add the names of the owners.
- Add the date the container was made.
- Requires product identifier from SDS.
- Requires a general statement regarding hazards.
-
- Words/pictures/symbols (or a combination thereof).
Hazardous Waste
What is Hazardous Waste?
Hazardous Waste is waste that has one, or more, of the following characteristics:
- Flammable
- Flash point below 140˚F
- Corrosive
- pH above 12.5 or below 2
- Toxic
- Variety of definitions, but “harmful or fatal when ingested or absorbed”
- Reactive
- Unstable under normal conditions, oxidizers, water reactives, etc.
Webster’s Sewer Discharge permit says for waste to be discharged to the sewer:
- Must be non-hazardous
- Must be dilute liquid
- Must have a pH between 5 and 10