Site Wide Glossary

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D

DAS

Documentation And Sampling.

Decant

When solids are separated from a liquid. For example, when soil residues are separated from cleaning chemical solutions.

Dehydrated

When the water is removed.

Denaturation

To break the natural properties.

Deplete

Use up, reduce.

Desiccation

The process of drying or removing moisture from something.

Detergent

Cleaning chemicals that dissolve dirt and oil, and are used for manual cleaning. For example, dishwashing liquid.

Deteriorate

Break down.

DFITO

Delivered In Full On Time.

Diafiltration

It is used for better purification by adding water to the feed to wash out low molecular components like lactose and minerals.

Dice

Cutting cheese into cube shapes of the required portion (dice) size.

Differential media

Media which has been made so that the by-products of microbiological growth cause certain reactions which allow the laboratory to see what type of microorganisms are growing. Most differential media is also selective. For example: if a bacteria can digest lactose, the by- product will be lactic acid. A differential media may have a dye which is colourless, but turns black in acidic conditions. Therefore black rings show that the colonies are digesting lactose.

Diluting

Mixing a chemical with water so it is not so strong.

Discoloured

Something that is coloured differently to its normal colour. An example is when we spill tea or coffee on our clothes, and the mark doesn’t come out.

Discreet

Being careful and responsible with other people’s personal information.

Dispersed

Spread out.

Dispose

Get rid of.

Dissolve

When a substance mixes completely into a liquid. For example, when sugar mixes with water the sugar disappears into the water – the sugar has been dissolved into the water.

Distinctive

Unique.

Distributor plate

Sometimes known as a Spreader Plate, this plate spreads the milk infeed evenly across the top of the calandria to ensure even distribution into the tubes and therefore, even heating.

DMS

Daily Management System.

Dry

To reduce the moisture content down to the point where bacteria can no longer grow.

Dry Matter (DM)

Dry Matter is the solid content of feed. Grass normally has a DM content of 12-30%, and 88-70% water. Each feed type has its own composition of DM.

DSI

Direct Steam Injection.

DWU

Dairy Workers Union.

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