Phenol Red and Bromothymol Blue

Explore acids and bases, and gain experience using real-life indicators.
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$19.95 Incl. GST
or 4 interest-free payments of $4.99
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Have a colourful day with these bright shades at play.

Nature as the artist uses acid and bases as its palette. Flower petals, lichens, shells, sand and feathers all obtain their colour from chemicals like acid and bases.

Use Phenol Red as an indicator and watch the colour changes appear like magic - shades of yellow, pink or red depending on the acidity of the substance you're testing.

Bromothymol Blue turns Australia's favourite colours - green and gold - when mixed with different substances depending on their pH.

Explore acids and bases, and gain experience using real-life indicators, Bromthymol Blue, and Phenol Red which is regularly used to test pH in spas and swimming pools.

Age: 9+ with adult supervision

What You Get

Phenol Red & Bromthymol Blue Indicator Set

Kit Contents

  • 28 grams of phenol red solution
  • 28 grams of bromothymol blue solution
  • 5 grams of citric acid
  • 5 grams of sodium carbonate
  • 1 beaker
  • 1 scoop
  • Cups
  • Sticks
  • Pipettes
  • Instructions

What is an acid?

An acidic solution, like vinegar, contains an excess of hydrogen ions (H+), and a basic solution like soap, contains and excess of hydroxyl ions (OH-).


  • Acids and Bases
  • Indicators

WARNING: CHOKING HAZARD - Small Parts. Not for children under 3 years.

More Information
Length (cm) 14
Width (cm) 14
Height (cm) 28
Age Group 9-10 Years, 11-12 Years, 12+ Years
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What are the shipping costs?

FREE Shipping is available on all orders over $120 to anywhere in Australia!

Orders under the value of $120 incur a low flat rate shipping cost of only $9.95 to anywhere in Australia.

Express, Registered and International delivery options are also available. The cost for these premium shipping services will be automatically calculated during the checkout process.  Please conact us if you have any queries with these services.

In some cases we may need to apply a shipping surcharge to large or fragile items, especially to remote or non-urban locations. You will be contacted by us for confirmation if this additional charge is applicable.

How long will it take for my order to arrive?.

You should receive your order within 2 to 4 working days, although to some regional and out back areas it can take up to 2 working days longer. Orders going to WA also take a little longer, up to 6 working days.

All standard orders are shipped using Australia Post's eParcel service, so you'll be kept fully informed of the progress of your order during its journey to you. Aside from receiving regular email updates, you can enter your tracking number into Australia Post's website at any time for information about the delivery status of your order.

International delivery will take from between 1 to 4 weeks depending on the destination and potential customs clearance delays.

When will my order be shipped?

We ship every Victorian business day. Orders received and paid for by 12pm AEST time will generally be shipped the same day.

If you require your order urgently, we have a next day delivery express service available.

What locations do you ship to?

We ship to both Australian and International customers.

What shipping options are available?

The majority of orders are shipped using Australia Post's trackable eParcel service, with larger orders being sent by national courier.

We also have options for express or registered post. A number of international delivery options are also available. These can be selected during checkout.

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