Technical data

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1. Sample Transfer Pump,
SP 825/25 (Syringe Pump)
The ERWEKA 8-channel Syringe Pump, Type
SP 825/25 with 25 ml Syringes is the ideal Me-
dia Transfer Pump for all kind of Dissolution
Systems. It offers very accurate volume flow,
elimination of absorption (glass/Teflon) and
high flexibility due to an electric 4-way valve at
the in-/outlet of each syringe. This unique de-
sign allows performing all needed steps for the
Dissolution Test, even dilution, media replace-
ment and transfer from the Fraction Collector to
an UV-VIS system with only one pump! The SP
825/25 is equipped with a RS 232 interface for
control by the ERWEKA Disso.net software.
 8-channel Syringe Pump
 8 electric 4-way valves, absorption free
 Hamilton syringes 25 ml
 Accuracy of volume 0,2 ml (25 ml sy-
ringes)
 RS 232 serial interface
 Teflon tubing
2. Autosampler, FRL 820
The FRL 820 was designed to meet all users’
requirements such as storage of the samples,
dilution of the stored samples and when con-
nected to a UV-VIS Spectrophotometer, trans-
fer of the diluted or undiluted sample with the
need of only one ERWEKA 8-channel Syringe
Pump, Type SP 825/25.
In combination with an ERWEKA Dissolution
Tester, the ERWEKA Dissolution Software
package and the before mentioned Syringe
Pump, the system offers storage in either glass
tubes (25x 8 of 10 or 17x 8 of 25 ml volume) or
sealed/ unsealed HPLC vials (25x 8 of 1.5 or
4.0 ml volume).
Due to the 8-channel ERWEKA Syringe Pump,
the samples are dosed with a high accuracy of
volume.
When the sample is taken, the withdrawn media
volume may be replaced with fresh media from
a media replacement container, integrated in
the FRL 820. Two 1-channel Peristaltic Pumps
refills the media replacement container auto-
matically after the media replacement process.
The stored sample may be diluted with dilution
media in a ratio of max. 1:10 from an integrated
dilution media container (to be automatically
refilled from an external media
ERWEKA UV-VIS Off-/Online System
(storage, media replacement, dilution and UV-VIS analysis)