Fleece to Grease - Croda Science · 2019-02-07 · Add 50 ml of A and 50 ml of B -> shake Part 2...

Fleece to Grease

From Fleece to Grease

Fleece to Grease

• Woolgrease is a greasy yellow

substance that comes from the

fleece of sheep

• Woolgrease is a by-product of

the wool industry.

Purpose of woolgrease

Keeps the sheep dry

Keeps the sheep warm

Protects against UV light

WHAT IS WOOLGREASE?

Cool Sheep

Washing Wool

Wool Scouring Process

ONE MERINO SHEEP 250-300 ml WOOLGREASE

SHEEP GIVE AROUND 200 g OF WOOLGREASE

(MERINO SHEEP GIVE THE HIGHEST WOOLGREASE YIELD)

Wool Scouring Process

THEREFORE, A 200 KG DRUM CONTAINS

THE ‘OUTPUT’ OF ~1000 SHEEP

http://www.scienceofhealthyskin.org.uk/lanolin4.htm

The Problem with Grease

http://www.scienceofhealthyskin.org.uk/lanolin4b.htm

The Problem with Grease

Drums of Woolgrease

Woolgrease Lanolin

▪ Administrator keeps a written and pictorial

record for the group

▪ Resource Manager collects, sets up and

returns all equipment used by the group

▪ Communications Officer collects the group’s

ideas and reports back to the rest of the class.

▪ Health and Safety Manager takes

responsibility for the safety of the group, making

sure everyone is working sensibly with the

equipment

▪ Personnel Manager takes responsibility for

resolving disputes within the group and

ensuring the team works together

Roles & Responsibilities

Oil and Water

Where is lanolin used?

To make most of the products we need to

get the lanolin oil to mix with water

Oil and Water

Which product of C, D or E will help mix A

and B?

PlanningWe are investigatingWe could change… We could measure/observe…

We will

change…

(independent)

We will

measure/observe

(dependent)

We will keep the same

Our question is….

We could change… We could measure/observe…

We will

change…

(independent)

We will

measure/observe

(dependent)

Our question is….

Amount

of water

Amount

of oil

Amount

of extra

product

Amount

of time to

separate

product

we will

Amount

of time to

separate

Amount

of waterAmount

of oil

Amount

of extra

product

Which of product C, D or E mixes A and B?

PlanningWe are investigating

▪ Bottles labelled A-E

▪ 4 plastic jars and lids

You will need

Part 1

▪ Add 50 ml of A and 50 ml of B -> shake

Part 2

▪ Add 45 ml of A, 45 ml of B, 10 ml of C

▪ Add 45 ml of A, 45 ml of B, 10 ml of D

▪ Add 45 ml of A, 45 ml of B, 10 ml of E

Which of product C, D or E mixes A and B?

The Pastillator

▪ Some of our customers want a product that is

easier to use and so they want it in a form of

little blobs called pastilles.

▪ These pastilles are made in a machine called a

pastillator

http://www.scienceofhealthyskin.org.uk/lanolin6a.htm

Pastillator Video

▪ Laminated sheet

▪ Spoon

▪ Pipette

▪ Different products

You will need

We will

change…

(independent)

We will

measure/observe

(dependent)

Our question is….

We will

change…

(independent)

We will

measure/observe

(dependent)

Our question is….

Amount

product

Tool to

pastilles

Time to

pastilles

even the

pastilles

are made

How well can we make pastilles?

▪ What did you find out?

▪ Did different products need different equipment

to make the best pastilles?

Feedback

Thank you!We hope you enjoyed our visit!

Perhaps one day you would like to be a scientist too?!

Fleece to Grease - Croda Science · 2019-02-07 · Add 50 ml of A and 50 ml of B -> shake Part 2...

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