What we test
Ten advanced tests,
one comprehensive panel.
A complete menu for HPC cooling chemistries — propylene glycol (PG), ethylene glycol (EG),
OAT extended-life coolants, deionized water, and single-phase dielectric fluids.
We tailor the test set to your fluid so you only see what's relevant.
pH level testing
METHOD · IWI-142
Confirms coolant remains alkaline (pH > 7). Acidic drift signals corrosion risk; over-alkalinity
usually means mixing of coolants or over-concentration of additives.
Example result
9.6 pH
normal 7.0 — 11.0
Conductivity testing
METHOD · IWI-480
Specific conductance rises with ionic contamination — hardness from water supply, fluoride,
chloride. Sudden changes often reveal coolant mixing or inhibitor overdose.
Example result
5,210 µS/cm
normal < 6,600 µS/cm
Corrosion inhibitor levels
METHOD · ICP-OES IWI-101 + HPLC IWI-510
Quantifies inhibitor chemistry — phosphate, nitrite, tolyltriazole, molybdenum, and OAT organic acids.
Inhibitors protect copper, aluminum, brass, and steel; depletion is invisible without measurement.
Example result
8,857 mg/L PO₄
trended vs. new fluid
Biocide levels & microbial testing
METHOD · ATP bioluminescence + plate count
Detects bacterial and fungal load before biofilm forms. Tracks active biocide residual
so the loop has chemistry left to defend itself between samples.
Example result
< 10 CFU/mL
action > 10³ CFU/mL
Glycol concentration
METHOD · refractive index IWI-134, ASTM D5827 mod.
Measures glycol-to-water ratio — drives freeze and boiling points and heat-transfer capability.
Low glycol means inadequate corrosion protection; high glycol means lost heat-transfer.
Not applicable to DI water or dielectric coolants.
Example result
49.2 %
normal 50 % v/v
Oxidation stability
METHOD · degradation product analysis IWI-510
Tracks glycolate as the primary breakdown marker, plus acetate, oxalate, and formate
as secondary-stage indicators. Reveals localized overheating and air-ingress events.
Example result
340 mg/L
normal glycolate < 1,500
Particle count
METHOD · laser particle counter, ISO 4406
Sized particulate distribution — separates dust ingress from corrosion product
and wear debris. Critical for protecting cold-plate microchannels.
Example result · ISO code
17 / 15 / 12
target ≤ 18 / 16 / 13
Dielectric strength
METHOD · ASTM D877 / D1816
Breakdown voltage for single-phase dielectric coolants in immersion-cooled systems.
Falling values indicate moisture ingress or polar contaminants.
For dielectric / single-phase immersion fluids.
Example result
38 kV
spec > 30 kV
Visual inspection
METHOD · IWI-520 analyst observation
Color, clarity, foam, odor, and presence of magnetic / non-magnetic particles.
Often the first signal of degradation or contamination before instruments move.
Example result
Clear · yellow
analyst-rated pass
Viscosity & thermal conductivity
METHOD · ASTM D445 / transient hot-wire
Kinematic viscosity at operating temperature plus thermal conductivity —
the two physical properties that decide how efficiently the loop actually moves heat.
Example result · cSt @ 40 °C
2.84
spec 2.5 — 3.2
BASELINE · TEST FREQUENCY: ANNUAL MIN. — RECOMMENDED QUARTERLY FOR HIGH-DENSITY LOOPS
