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To avoid trace fading or background development, the
paper must not be exposed to or come in contact with
the following, either before or after recording:
l
Solvent-based adhesives, as used in mounting forms,
pressure-sensitive tapes, labels, and common mending
tapes. Starch- or water-based adhesives may be used.
I Plastics containing plasticisers, such as vinyl chlorides
(PVC) typically found in vinyl sheet protectors,
separators and plastic envelopes. Other plasticisers
include polyethylene glycol, dioctyl phthalate, and
dioctyl adipate.
n
Glossy (or non-glossy) papers containing tributyl
phosphate, dibutyl phthalate, or other organic
solvents, such as FAX and other non-chemical/thermal
recording paper, or product literature.
n
Liquid or vaporous solvents, such as alcohols, ketones,
esters, ethers, etc. Note that many of these solvents
are found in felt-tip and other marking pens.
w Petroleum-based solvents, such as toluene, benzene,
and gasoline.
w Bright light or UV sources such as sunlight, flourescent
and related light sources.
w Chemicals containing castor oil, ammonia, some
chemicals found in common hand and face creams, or
citric acid (found in fruit juices).
n
Forms containing carbon or carbonless (NCR) copy
sheets.
n
Pastes, creams or gels commonly used for ECG or
ultrasound tests that contain any of the above or
related chemicals.
If original recordings are stored, HP recommends
that records be checked annually to determine their
integrity. However, where long term storage is desired,
Maintaining the Cardiograph 4-7
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