ACRYLATES, STYRENES, and PHTHALATE-based polymers and resins can be solvent-
stripped from small fragments of a fabricated part and run as a CAST FILM or in a LIQUID
CELL.
Selective SOLVENT STRIPPING can be done with the following variety of solvents based on
their polarity, boiling point and solubility characteristics: Methanol, Acetone, Hexane,
MIBK/MEK, Methylene Chloride/Chloroform, Xylenes/Cresols, Poly-Chloro-Ehtelene
(cleaning solvents”).
Note: Try to combine several methods to separate the individual components of a mixed resin
or co-polymer product.
7. For AQUEOUS SAMPLES and materials soluble in WATER =
Using the PLC-11M, or other liquid ATR with an impervious Zinc Selenide crystal, take a
Background scan of the empty, clean crystal first; then place a few drops of the sample on the
crystal.
Scan the sample and process normally.
If the materials can be extracted or precipitated from the water matrix, or evaporated from it;
collect the DRY solids or residue and prepare by one of the above techniques.
8. GENERAL CLEANING PROCEDURES for CELLS and CRYSTALS =
Clean salt plates by wiping on a mat of clean paper towels wet with the solvent being used.
Rub plate in a figure-8 pattern, use Latex or other gloves to protect the salt from moisture.
Rub the crystal vigorously in the solvent spot then continue to rub while moving to a dry spot
on the towel to prevent condensation from fogging the salt.
A mixture of 80 % Methanol / 20 % Water will work well on stripping NaCl plates and
polishing the surface for re-use, if you use this method.
Clean ATR crystal by holding with gloves and wiping with the solvent being used for the
sample preparation.
Be careful not to bend or crack the crystal while cleaning.
Clean Sealed Cells by flushing repeatedly with the solvent being used, and then by pulling air
THROUGH the Cell (do NOT blow) until dry.
SECTION O
Trouble Shooting
1. Doesn't initialize.
A Did the chopper ramp up to speed? (If not the watchdog should make it reset and try again).
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