Replacement Messenger for Watermark® 2.2 Litre Water Sampler Spring Scales Each envelope features a secure 2351250 Fish Tagging Gun Select a Mesh Size:NTX190-25 - 190 Micron x 39" x 25" Resolution 1 4000

Each envelope features a secure fold-over tuck seal to help prevent sample loss during transport and storage

Supplied with a Traceable® Calibration Certificate for regulated laboratory environments

Results are expressed as ppm NO3-N

Written by a marine biologist and illustrated in colour by a prizewinning underwater photographer

Replacement Messenger for Watermark® 2.2 Litre Water Sampler Spring Scales Each envelope features a secure 2351250 Fish Tagging Gun Select a Mesh Size:NTX190 25 190 Micron x 39" x 25" Resolution 1 4000 Each envelope features a secure fold over tuck seal to help prevent sample loss during transport and storage Supplied with a Traceable® Calibration Certificate for regulated laboratory environments