Does GXLab recommend soil samplers set their GPS to WGS84 at any stage when commencing an ACCU Scheme soil carbon project?

GXLab recommend that soil samplers use a handheld GPS configured to a projected Australian datum such as GDA94 or GDA2020 when navigating to sample locations.

This is primarily an accuracy consideration rather than a precision issue. Sampling locations generated in GXLab are defined to high coordinate precision, but field accuracy depends on the datum and projection used in the GPS device. Using GDA94 or GDA2020 aligns the field device with Australian geodetic standards and reduces the risk of systematic positional offsets that can arise when working solely in WGS84.

There is no requirement for samplers to switch their device to WGS84 during fieldwork for ACCU compliance. The key requirement is that the CRS used in the field is consistent, documented, and aligned with the datum used to define the project boundary and sampling grid.