• 500g Packet
• White powder
• biodegradable

Sodium bicarbonate is a chemical compound with the formula NaHCO₃

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Bicarbonate of Soda – also known as Baking Soda, Bicarbonate of soda and Sodium Hydrogen Carbonate has a number of useful properties – It can neutralise acid, scrub shiny materials without scratching, deodorise, and extinguish grease fires. It can be used as a deodoriser in the refrigerator, on smelly carpets, on upholstery and on vinyl. It can help deodorise drains. It can clean and polish aluminium, chrome, jewellery, plastic, porcelain, silver, stainless steel and tin. It can soften fabrics and remove certain stains and also soften hard water.

Traditional yet incredibly effective, these domestic cleaning products make us wonder why we ever stopped using the good old-fashioned solutions. And, as with lots of classic products, they’re really versatile too.

Follow the link below to purchase some citric acid.

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The pH Scale

Universal test papers for measuring pH levels. The pH indicates the acidity/alkalinity of a liquid.

Universal Indicator Paper is one of the most popular pH test papers on the market and suitable for many applications. They provide a quick and easy method of indicating the pH of a solution by using a single colour change which can be matched to the colour chart at intervals of 1 pH.

• pack of 80 strips
• standard colour card
  

  80 pH testing papers in a water tight plastic container

• high quality pH paper
• perforated strips for easy use
• Water-tight plastic container
• Strip have intervals of 1 pH unit

Directions

• Dip a strip of test paper into test solution for approximately 1 second and remove.
• Compare colour on test paper with colour chart within 5 seconds of removal.
• Colour produced will indicate the pH of the solution.
• For turbid liquid/suspensions place a drop of test liquid onto a strip of test paper. Use the spot on the reverse side of the test paper to compare with the colour chart.

Storage

• Keep unused test papers in their original plastic container
• Store in a cool dry place

A Little bit of Science:

FACTS ABOUT ACIDS

Acids have a low pH ( below 7 )

Acids turn pH paper red or orange

Acids taste sour.

Some acids can damage living cells.

Acids are neutralised by bases to make salts and water.

Acids make hydrogen when they react with some metals.

Acids have hydrogen in them! For example, Hydrocholoric Acid ( HCl )

FACTS ABOUT ALKALIS

Alkalis have a high pH ( over 7 ) and turn pH paper blue or purple.

Alkalis often feel soapy or slimy.

Alkalis can be corrosive and very damaging to skin.

Alkalis neutalise acids to make salts and water.

Alkalis dissolve in water to give an alkaline solution.

Alkalis are usually Metal Oxides, Hydroxides or Carbonates eg. sodium hydroxide (NaOH)

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