Overview
Hygiena AquaSnap Total is a water ATP test, read in a Hygiena luminometer. It is designed for water and rinse water rather than for surfaces — most usefully, for checking the final rinse of a clean-in-place cycle.
Supplied as a 100-pack.
What it measures
AquaSnap Total measures both microbial ATP — living cells and particulate matter — and free ATP, which is non-microbial or from dead cells. The device contains a detergent that releases ATP bound to microbial or organic matter and ATP held inside microbes, so the reading reflects the total organic load in the sample.
To separate the two: run AquaSnap Total alongside AquaSnap Free on the same water. Free measures the non-microbial fraction; the difference between the two tells you the microbial ATP. AquaSnap Free is not currently a stocked CCW line — ask us if your procedure needs it.
Why the dipper tip matters
The collection tip is designed to pick up a consistent 100 µl sample every time. That is the whole basis of a comparable water result: if the volume varies, the reading varies, and you learn nothing from the trend.
This is the practical difference between a purpose-made water test and using a surface swab in water. A swab is designed to wipe an area, not to meter a volume, and dipping one in water gives you a sample size that depends on how long it was held there.
Where it is used
- CIP final rinse. Sample the water from the last wash of the cycle. ATP present in that water means the cycle is not removing residue, and the surfaces it just ran over are not clean.
- Rinse water and recirculated water where organic load matters.
- Process water checks as part of a routine monitoring programme.
The value of testing the rinse rather than the surface is coverage: the rinse water has been in contact with the whole system, including the parts of it you cannot reach with a swab.
Using it well
Sample at the same point in the cycle every time. Water ATP results are a trend, and a trend needs a fixed sampling point.
Read promptly after activation and keep the routine consistent.
Set your own limits from your own baseline. There is no universal figure. Sample a cycle you know ran correctly and work from that.
Sanitiser in the water can suppress the reading. Know where in the cycle your sample is coming from.
Choosing between the Hygiena tests
- AquaSnap Total — water and rinse water. This product.
- UltraSnap — general surface ATP.
- SuperSnap — high-sensitivity surface ATP.
- PRO-Clean — protein residue, colour change, no meter.
- SpotCheck Plus — glucose and lactose, colour change, no meter.
Compatible meters
- Hygiena EnSURE Touch ATP Meter
- Hygiena SystemSURE Plus (meter only)
- Hygiena SystemSURE Plus Starter Kit
Storage and shelf life
ATP and enzyme test devices are reagent products with a real shelf life, and that shelf life depends on how they are stored. Refrigerated storage is what preserves it.
Hygiena storage and shelf life guide for environmental and microbiology testing devices (PDF)
Shipping: the price of this item includes thermal packaging and an ice pack, so the devices arrive in condition. Put them into refrigerated storage when they land rather than leaving the carton on a bench.
Frequently asked questions
What volume does it sample?
100 µl, collected by the dipper tip.
What is the difference between Total and Free?
Total measures microbial and free ATP together. Free measures only the non-microbial fraction. Run both to work out the microbial ATP.
Can I use a surface swab in water instead?
You can dip one, but you will not be metering a consistent volume, so the results will not be comparable. Use the water test for water.
How many tests in a pack?
100.
Do they need refrigeration?
Yes — see the storage and shelf life guide above.
Monitoring a CIP system? Tell us the cycle and where you can sample it and we will help you set up a regime that produces a trend you can act on.
