Harris Organic Distillery
We have the best organic distillery in Perth
Here is a calculator I use to calculate the alcohol volume of my moonshine or brandies to calculate the exact volume of litres I have from the weight of the spirit. You can use it too.
The data for the conversion is from the International Organisation of Legal Metrology. The International Alcometric Tables. https://www.oiml.org/en/files/pdf_r/r022-e75.pdf
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How to Calculate the Volume of your spirit when weighing your samples.
How to Calculate the Volume of your spirit when weighing your samples is easy mathematics.
1. Weigh your bottle of spirit.
2. Weigh the empty container and calculate the net weight of spirit.
3. You will need to know the ABV, by hydometry etc.
4. Enter these into the calculator above.
Example of how the Calculation of the Volume of your spirit
Weight of Bottle of Spirit minus the bottle weighs 2.32 kg
The alcohol by volume (ABV) is 45%.
Therefore the lookup density is 939.54 kg/ m3 or 0.93854 kg/litre
And 2.32 / 0.93854 = 2.470 litres
Distillery History
First planted in 1999, the vines at Harris Organic Wines’ vineyard are created by hand - from the first budburst of Spring to the final pruning in grey winter,
the organic vineyard (where beautiful brandy begins) is carefully tended by Duncan.
Because the Harris Organic vineyard is managed using organic principles of viticulture, no pesticides or herbicidal chemicals are used on or around the vines, nor are the vines artificially fertilised.
The organic grapes are fermented into a special wine. Once finished the wine is pumped to the wood fired pot still.
Everything is done by hand at Harris Organic; from chopping the wood to most importantly, the labelling of the bottles;
this means there are no machine battered spirit bottles at Harris Organic – you could say that we are happy producers of “free range" spirits.
Spirit Temperature Correction Calculator
If you want to know how much alcohol is in your jar, look up Temperature Correction Calculator
This corrects the spirit percentage you have to the standard 20 degrees celcius.
Try this
Spirit Temperature Correction Calculator
NB: Subsection 6(2) of the Distillation Act, subsection 3(2) of the
Spirits Act and the preamble to the Schedule to the Excise Tariff
Act state, respectively, that the volume of alcohol contained in
any liquor or other substance, spirits or goods shall be taken to
be the volume that would be the volume of that alcohol if the
alcohol were measured at a temperature of 20°C.
Those
provisions also specify that the specific gravity of alcohol in
relation to water is 0.79067.
All quantities relating to external
deliveries and receipts are required to be corrected to 20°C to
correctly assess any duty liability in accordance with the Excise
Tariff Act.
What’s happening wit the different densities?
ATO / Australian law requires you to use a legal specific gravity for pure ethanol at 20 °C of 0.79067 when calculating excise volume. This is prescribed in the Excise Determination and ATO guidance.
OIML and modern metrology use a slightly different, experimentally-derived value (e.g. OIML / international alco-metric tables list ~0.78924). That value comes from up-to-date densitometry and the international alcoholometry literature (European Pharmacopoeia / OIML tables).
drugfuture.com
Why they differ
Legal vs scientific standards: the ATO figure is a legal constant chosen for consistency and regulatory stability (so excise calculations are reproducible and not shifting when metrology improves). The OIML value is the modern experimental best estimate.
Small magnitude: difference ≈ 0.0014 (about 0.18% relative). It’s small, but material for excise money and duty reporting, so law takes precedence for tax purposes.
Where to find the ATO/legal references
Australian Taxation Office practical guidance page: Measuring excisable alcohol volume and strength (states use 0.79067).
The legislative instrument: Excise (Alcoholic Strength of Excisable Goods) Determination 2019 (text confirming the 0.79067 constant).
ATO guidance and excise law also reference using standard practical alcohol tables (AS2371 historically) for hydrometer conversion.
Practical effect for you
For excise returns / compliance: use 0.79067 and follow the ATO/Determination rules (this is legally required).
Australian Taxation Office
For production, lab work, R&D or accurate conversion: use OIML / modern density tables (0.78924 and full tables) — they’re more accurate physically.
What we do ?
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Organic Spirit making
Harris Organic is the first certified organic distillery in Perth. We only use natural yeasts in our ferments. We specialise in hot climate winemaking, making the best certified organic spirits in Australia.
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Organic distilling
Harris Organic is the only certified organic distillery in Perth. We use our organic grapes as the base for our organic Brandies, Moonshine and Vodka.
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Cellar Door Sales
As we sell direct to you, at our cellar door or through our online store, our organic prices and quality are better than anywhere in Perth.
