Jenway 6715 - Manual (Page 29)

11
environmental operating Conditions:
The 67 Series is designed to work safely under the following conditions:
Temperature
15 to 40ºC
Humidity 0 to 90%RH
Accessory Specifications
Peltier
Temperature Range:
20 to 50° C or 68 to 122° F
Temperature Resolution: 0.1° C or 1° F
Accuracy: ±0.5° C
Stability: ±0.3° C
Red/Green Window: ±0.5° C
Sipper Pump
Modes:
Continuous Aspiration
Flow rate dependent on tube ID.
(12ml/min with supplied tube)
Timed aspiration sample/air-gap/wash
sample volumes 75µl min / 9.5ml max.
segment run time 48 secs max.
Memory Non-volatile
1.3 GooD PrACtiCe GUiDelineS
1. For optimum performance all spectrophotometers should be sited in a clean, dry, dust free
atmosphere. When in use ambient temperature and light levels should remain as constant as possible.
2. Adherence to Standard Operating Procedures (SOP) and Good Laboratory Practice (GLP) should be
monitored with regular calibration checks and a suitable Quality Control (QC) programme.
3. The sample chamber lid must be fully closed during measurement and before any readings are
recorded or printed.
4. The correct selection of sample containers is imperative for accurate and reproducible results:
a) Check that the material of the sample container is compatible with the wavelengths to be used
for measurement. In general glass can only be used down to 360nm or 320nm depending on quality.
Standard plastic cuvettes can be used down to 320nm. Special UV versions can be used down to
260nm. Below this level quartz cuvettes must be used.
b) Plastic disposable cuvettes should be used ONCE only.
c) Glass cuvettes should be thoroughly cleaned after use. Discard when scratches become evident in
optical surfaces.
d) Care should be taken when selecting semi-micro or micro cuvettes. The cuvette window on the
inner chamber (the area filled with sample) must be wider than the aperture in the sample holder or
light will reach the detector without passing through the sample. In this case, semi-micro or micro
cuvettes with self-screening black surrounds must be used or alternative holders for these cuvettes
fitted.
e) Glass test tubes and other sample tubes should be used with care. Where possible, matched tubes
should be used and any index mark set to the correct position before measurements are made.
f) Ensure any sample containers used are compatible with the constituents of both the samples and
standards they are to hold. Plastic cuvettes are not compatible with organic solvents.