Biological and Biological and Chemical Chemical StorageStorage

Bio Sciences: Chemicals

BellworkBellwork

What two (2) dates should always be on a biological sample label?

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ObjectivesObjectives

1. Identify Biological storage container used in a stock room

2. List the two (2) main categories of chemicals

3. List subcategories of chemicals and where those groups should be stored in a stock room

4. Design a proper biological and chemical stock room set up

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TerminologyTerminology

Inorganic: Any substance in which two or more chemical elements generally other than carbon are combined.

Organic: Generally any member of a large class of compounds whose molecules contain carbon.

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The Grocery StoreThink of a super market or a grocery store.With your partner, list five (5) ways the

store has items organized and why.

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The Grocery Store and The Stock Room

Just like a grocery store, biological and chemical supply rooms are organized according to the type of “product”, or in the case of a stock room by type of biological/ chemical based on categories.

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Biological Storage in Stock Room

Usually need to be stored in a refrigerator or freezer.

MAKE SURE ITEMS ARE LABELED CORRECTLY

Short-term storage:Refrigerator

Should be between 2°C and -4°CLong-term:

Freezer Either -20°C or -80°C

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Chemical Storage in Stock Room

Generally organized by category:Inorganic: Any substance in which two or more chemical elements generally other than carbon are combined.Organic: Generally any member of a large class of compounds whose molecules contain carbon.

Each category has subcategories as well.But above all else, items must be stored in

clearly and properly labeled closed and intact containers.

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Chemical Storage Subcategories

FlammablesOxidizersReducersConcentrated AcidsConcentrated Bases

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Water ReactivePeroxidesGas CylindersBiologicalPoisons

What is the difference between biologicals and chemicals?

Chemical Storage in Stock Room

We will use an adapted suggested chemical storage scheme from Flinn Scientific for high school chemical stock room set ups.

In short -The set up is designed to not only categorized chemicals (NOT by alphabetical order) but to also separate them based on reactivity.

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Chemical Storage of InorganicsNot to worry if you are not familiar

with they types of chemicals, you will learn about some of them as the year progresses. What is important is that you can use this sheet to help you identify where a chemical should be stored based on the information given on the label.

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Chemical Storage of Inorganics cont.

Let’s take a look at inorganic. First, is what you will find on a shelf, where no special cabinets or refrigeration is needed.

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With your partner, find what

category permanganates

and nitrate are in.

Chemical Storage of Inorganics: Acids

All acid, especially concentrated, should be stored in a dedicated acid cabinet, ventilated is best. Some organic acids may be stored here.

Ex. acetic acid

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NEVER store nitric acid (HNO3) with other acid. Nitric acid should be stored by itself.

Chemical Storage of OrganicsNow let’s take a look at organics. First, is

what you will find on a shelf, no special cabinets or refrigeration needed.

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With your partner, find what category Amines and Amino Acids are grouped in.

Chemical Storage of Organics: Flammables

Like the word says, they will catch on fire; therefore, they should be stored in a special cabinet that meets NFTP and OSHA standards – basically it should be able help minimize the risk of a fire starting.

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Refrigerated flammables should ONLY be stored in a special flammables refrigerator.

Chemical Storage of Organics: Poisons

Some laboratory experiments require the use of dangerous poisons. These should always be stored in a locked cabinet.

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If the label says “Poisonous”- it probably is a poison.

Recall: Think-Pair-Share, what the six means on the white poison MSDS diamond.

Biological and Chemical Gas Cylinders

Compressed gas cylinder and aerosols are used in many laboratory experiments.

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Need to be stored up right position and secured with a chain in their own section of the stock room. Some biological aerosols may need to be stored in a refrigerate – check labels!

Your Stock RoomWith your partner you will use your “

Biological and Chemical Storage” and the “My Stock Room Set Up” to design a proper biological and chemical stock room.

Read all instructions before you begin to cut and glue.

Before the period is over, you need to have completed the set up and labeling.

Be prepared to share with the class.

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ClosureClosure

Summarizes, in 12 words or less, the most important aspects of the days lesson.

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