Advanced
®
Cryoscope Model 4250 User’s Guide
18
Standards & controls
Advanced Instruments offers and recommends the use of Lactrol
®
530
Reference Solution with your Model 4250 cryoscope. For information
on obtaining this solution, contact Advanced Instruments or an autho-
rized representative.
Lactrol
®
530 Reference Solution (Part No. 3LA030)
We recommended that you follow the Lactrol
®
530 Reference Solution
samples with bracketing calibration standards to check your instrument
operation and confirm your calibration. You should also run the
Lactrol
®
530 Reference Solution when you receive erratic results. Doing
so will allow you to verify proper operation or recognize and diagnose
problems promptly.
Selecting plateau mode
This instrument is equipped to use several methods of plateau determi-
nation. These are grouped into two types, TIMED and SEEKING.
Setup menu item #10, “Select Plateau Mode” is used along with the
“<” or “>” keys to cycle through the choice of 30, 60, or 90-second
timed plateau, and IDF 108B or ISO 5764 plateau seeking methods.
The proper selection will depend on your laboratory practices and
national requirements. Once selected, your instrument will base its
final result on the required timing and limits imposed by each standard.
The ISO 5764 plateau seeking method is a new method approved in
mid-2002 and requires the use of a non-metallic sample probe. If this
probe was not provided with your instrument at the time of purchase,
then you may acquire one from Advanced Instruments, Inc., along with
any necessary firmware update. If you select the IDF 108B seeking
method, then you may use the stainless steel sample probe supplied
with your instrument at the time of purchase, or available from
Advanced Instruments.
To Next Page
Loading...
Need help?
General
