Ann: Drilling Update, page-82

Just to clarify my post, the company did not use the word brine in the ann, but in the fine print they did say

Bailer sampling: Utilises a stainless steel hollow 3m-long tube with a check valve at the bottom. The hole was first purged by extracting a calculated volume of of liquid (brine and drilling mud) to ensure that sampled brine corresponds to the sampled depth. Once the calculated volume was extracted and brine was clear, samples were collected in plastic bottles and delivered to the laboratories. The lower part of the sampling hole section was temporarily sealed during purging and sampling.