OCR - Sampling and testing

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Sampling and testing

Practicals Possible

Making/Distilling perfume

Geological testing

Extracting metals

Metal content

Link to usefulness of minerals

Crystalline structure

Reactivity

Microscope tests

Forensic

fibre comparison

Bodily fluids

Recycling of paper

Making fertilisers to fit certain requirements

Quality control sampling at Allied bakeries

Testing Antacids

Making a circuit board

identify good etching solutions?

Making Asprin

Urine testing for medical or athletic purposes?

Making materials

Making concrete, making cement

Making glass

Making borax silly putty

elasticity

Making Nylon

Environmental testing

Organisms in water

Weather

Temperature

Heavy metals

Waterbourne nitrates

pH

Soil

Rain

Pathlab?

Kevlar Case study

Mechanical Properties

Density

Mass

Breaking strain

Stretch

Testing suncream

UV Opacity

Testing food

Toxins

What Killed John Franklin?

Vitamin C

Fat

Reducing sugars

Starch

Microbes

Testing ice core samples

Minerals

Acidity

CO2

Processing

Evaluating a process

test against spec

ID a suitable process

Processing materials in the lab

SAFETY

carry out fairly independently

Sampling

Taking the samples

Clean and dispose of equipment in a correct manner

Corret method/equipment

SAFELY!!!

Be able to produce a risk assessment

storage of samples

How do I need to store my samples if the storage is not to alter my results?

How will storage affect samples?

Representative samples

Where and when should I take samples?

Is the source homogenous?

how many samples do I need to reflect what is here?

Requirements of sampling

Why are we sampling?

Testing

evaluating results of a test

Evaluation the quality of the test

concluding

Recording results

Statistical prcessing

graphs

Appropriate relations

Devising a suitable test

Validity

Precision

Reliability

Following a standard procedure

Risk assessment

Chemical testing

Crushing

Making a microscope slide