A. The product code provides a fairly full description of the product. It is based on the composition of the device rather than the analyte, as some devices can be used for several, often diverse, analytes.
Take a typical example: LSNM-NP
L signifies loaded, meaning that the plastic housing comes complete with the gel and membrane layers, so that it is ready for deployment.
SN signifies that it uses the plastic housing that is appropriate for deployments in solution. Alternatives are SL (the housing appropriate for deployments in soils) and SP, indicating a sediment probe.
M signifies that it uses a binding layer of Chelex100. The complete list of codes for binding layers is given below. In most cases the choice of letters is not intuitive.
B Spheron thiol
C XAD resin
D HLB
E NMDG
H AgI
M Chelex100 resin
P Ferrihydrite
R Activated charcoal
T Metsorb (TiO2)
V TEVA resin
X Mixture of Chelex and Metsorb
Y Mixture of Chelex and Ferrihydrite
Z Zirconium oxide
N signifies the type of diffusion layer used. N corresponds to the normal APA polyacrylamide gel cross-linked with an agarose derivative. The alternative is A, which corresponds to an agarose gel.
P signifies the type of membrane filter used. P indicates polyethersulphone. Alternatives are G, indicating GHP, N, indicating Nuclepore and T, indicating PTFE.