Fluoride in the form of hydrogen fluoride is predominantly used
for the manufacture of fluorocarbon chemicals e.g.
fluoropolymers. It is also used in glass etching.
Fluorides are used in aluminium production, as catalysts for
petroleum alkylation and in the production of chemicals such as
herbicides (for agriculture) and uranium fluorides (for the nuclear
The American committee (US ACGIH) has revised its biological
monitoring guidance value for fluoride and proposes new, lower,
guidance values of 2mg/l in urine samples collected pre-shift and
3mg/l in samples collected post-shift. The basis of these
revised guidance values is to prevent skeletal fluorosis.
HSL's data on post-shift urine fluorides since 2010 shows that
20% of urine samples have levels greater than 3 mg/l. The
reduced American guidance values suggest it may be useful to
reassess exposure to fluoride. Results in excess of the
guidance values indicate that improvements to control or changes to
working practice should be considered.
Pre-shift urine levels reflect body burden and are significantly
affected by environmental exposure (e.g. diet, tap water).
Post-shift levels reflect exposure during that shift. Because
the pre- and post-shift guidance values are close numerically, we
suggest several pairs of samples to evaluate occupational
If exposure is repeated daily, we advise collecting pre-and
post-shift samples on three consecutive days. If exposure is
intermittent, collecting pre-and post-shift sample pairs on days
where there is potential for exposure is recommended.
In light of this, HSL are offering a special package to allow a
thorough evaluation of worker exposure. A single analysis
price of £55 covers three pairs of pre- and post-shift urine
samples (as described above) from an individual worker. This
offer is only available using our online ordering system.
Turnaround time is 20 working days from receipt.
Product Code: PE11500
Price: £58.00 (VAT free)