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Use of Liquid Nitrogen: Are there any restrictions to using liquid nitrogen in school laboratories?  If appropriate storage is sourced and safety procedures are followed, can teachers perform liqui

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Publication Date: 14 April 2016
1 Responses

What's the equation you use to make a solution from a solid? For example, I have copper sulfate in a solid powder but need it as a solution.

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Publication Date: 02 April 2016
2 Responses
Answered by an Expert

Chemical Register information & SDS printing query: Hi, Is there a standardized format for what information must be included in a Chemical Register for Emergency Services?

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Publication Date: 22 March 2016
1 Responses
Answered by an Expert

Chemical Safety: Hello. I would just like to ask what chemicals can be stored safely together.

In a chemical storeroom, as in which classes can be put together. Thank you.

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Publication Date: 21 March 2016
1 Responses
Answered by an Expert

Effective enzymes pH: Could I have some info on how I do the ph for the jelly for the pineapple prac please—Exploring Human Biological Science Stage 2 Body Works Activity 27 Page 176.

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Publication Date: 18 March 2016
1 Responses

Zinc Nitrate: Hi, My bottle of zinc nitrate has liquid in it and the bottle has expanded.  It does not look right.

HELP!

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Publication Date: 18 March 2016
1 Responses
Answered by an Expert

Laboratory ventilation: What are the standards for laboratory ventilation?

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Publication Date: 14 March 2016
1 Responses

Calcium oxide disposal: Hi. Can anyone tell me how to dispose of some very old calcium oxide. The container is all swollen and the date on the bottle is Dec 1988.

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Publication Date: 11 March 2016
1 Responses
Answered by an Expert

Cremated skeleton: I would like to know if anyone has had to dispose of a cremated skeleton from a school.  The one here has been here for 8 years approx.

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Publication Date: 10 March 2016
1 Responses
Answered by an Expert

Litmus Paper: The Litmus paper in our lab is many years old, but has been kept dry in a dark drawer.

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Publication Date: 10 March 2016
1 Responses

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