NSnappy® Hygi ATP luminometer

NSnappy® Hygi is an ATP luminometer designed for quick measurement of surface cleanliness samples with the NSnappy® service.

NSnappy® Hygi uses the luminometry method for the quick analysis of surface hygiene samples collected with the ATP test swab. The wireless device relays information directly to the NSnappy® service over a LoRaWAN radio connection. The NSnappy® Hygi luminometer can be used with any terminal device equipped with an internet connection.

In normal use, NSnappy® Hygi operates on the battery for three years. The measuring device comes with the NSure continuous warranty for IoT measuring devices, which involves calibrating the unit regularly and replacing the battery.

Benefits and features

  • Quick and easy to use
  • Results are stored automatically in the NSnappy® service
  • Surface cleanliness results available as trend graphs in NSnappy
  • The wireless measuring device does not require charging
  • Does not require a mobile app, a Bluetooth connection or attaching cables to a computer
  • Works with all devices with an internet connection and access to the NSnappy® service with a browser
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NSnappy Hygi LWEU User Manual


  • Storage conditions: +5…+40 °C, relative humidity 5-95%, non-condensing
  • Operating conditions: +20…+30 °C, relative humidity 5-95%, non-condensing
  • Protection class: IP20
  • Enclosure material: PC+ABS plastic


  • Dimensions: 198 x 47 x 27 mm
  • Weight: approx. 190 g, not including swab

Measuring method

  • Description: ATP luminometry based on a photodiode
  • Measuring time: approx. 15 seconds
  • Measuring unit: RLU (Relative Light Unit, where 1 RLU is roughly equivalent to 1 fmol ATP)
  • Measuring range: 0…99999 RLU
  • Display resolution: 1 RLU
  • Measuring noise: ±5 RLU
  • Measuring accuracy: ±20% ± 5 RLU

Sampling method

  • Single-use swab: Hygiena® UltraSnap® ATP surface hygiene sampling swab

User interface

  • Display: Two-digit 7-segment-LED display
  • Power button: Tactile silicone rubber switch

Radio connection

  • Description: LoRaWAN standard, EU 868 MHz frequency range
  • Transmitter module: Murata ABZ-093 LoRaWAN modem
  • Antenna: Internal
  • Compatibility: The device that uses a LoRaWAN radio connection requires an NSnappy® Hub LoRaWAN base station to function
  • Frequency: 863-870 MHz (LoRaWAN 1.0.2 EU band)
  • Power: Max +14 dBm E.R.P.
  • Range: Depends on environment, indoors: in good conditions up to hundreds of meters, outdoors: line-of-sight up to 10 km

Power supply

  • Type: 3.6 V Lithium thionyl chloride battery pack (1 x AA size)
  • Battery life: 3 years in normal use (approx. 100 operating hours)

EN standards

EU Declaration of Conformity: NSnappy Hygi