pH, K and SC readings from glasshouse soils were found to be almost independent of the moisture content provided the sample for analysis was taken on a volume basis. Cylindrical containers were most suitable for measuring volumes of soil for analyses. Different results were obtained when five operators carried out analyses for K on wet peat samples taken on a volume basis. The precision of all operators was excellent (CV ≤ 5.3%). The different results were due to variations in the technique of filling the container.