Electrodes

Electrode

Overview

High quality pH electrodes from Sirius

Our pH electrodes are manufactured to a high standard. Each electrode is tested at Sirius following rigorous procedures to assure its performance characteristics.

Electrodes for use on GLpH are tested by doing at least four hourly automated calibrations, each time rinsing the electrode in pH7 buffer, then calibrating in a second pH7 buffer, then rinsing and calibrating in pH4 and pH10. Only electrodes with slopes greater that 98% and less than 0.6mV drift in pH7 between the final two calibrations are passed for sale.

Electrodes for use on GLpKa, PCA200 and PCA101 are tested by doing at least two blank titrations between pH 1.8 and 12.2. Only electrodes with all parameters in specification are passed for sale. Our current Four-Plus specification requires alpha values between 0.04 and 0.16, S between 0.99 and 1.01, jH between 0 and 3, and jOH between -3 and 0.5.

Electrodes for use on Vinotrate. Vinotrate is a new product, and electrode test procedures are still under development.

Back to top

Electrode part numbers and accessories


Electrodes for use on GLpH
General purpose pH electrode, Ag/AgCl double-junction, frit junction, fixed lead
Part number
0485002
General purpose double frit electrode, faster flowing reference for dirty samples 0485013
 

Electrodes for use on GLpKa and PCA200

Four-Plus tested pH electrode, Ag/AgCl double-junction, fixed lead

 

 

0485003

 

Electrodes for use on PCA101

Four-Plus tested pH electrode, Ag/AgCl double-junction, without lead

 

 

0485019

Electrodes for use on Vinotrate

 
Half cell pH electrode 0485022
Flow through reference electrode 0485023
Buffer and filling solution  
Filling solution, 3M KCl without dye, 2 x 60mL (2oz) 1402012
pH7 buffer solution, 475mL 1402002

Accessories

Electrode Length adaptor

For use with Sirius electrodes when using partition solvents such as chloroform and dichloroethane which are denser then water. The adaptor allows the electrode to be held in a raised position in the electrode holder. This keeps the electrode bulb in the water for better results.

Electrode length adaptor Back to top
Latest news

Sirius appointed as distributors for Kibron Delta-8

24.7.08

Sirius are now the exclusive distributors in UK, USA and Canada for the Kibron Delta-8 system for measurement of surface tension and phospholipidosis.

Read more

Cambridge scientists set solubility challenge

11.8.08

A new paper from scientists using Sirius solubility techniques at the University of Cambridge asks "can you predict solubilities of 32 molecules using a database of 100 reliable measurements?".

Read more

Coming events

BPC 2008

09.9.08

John Comer from Sirius is giving a presentation on solubility and supersaturation, and their effects on predicting oral absorption.

Read more

AAPS Annual Meeting

16.11.08

Sirius will have a booth at this years AAPS Annual Meeting in Atlanta, Georgia.

Read more

Main site navigation
HOME
PRODUCTS
INSTRUMENTATION
GLpKa
D-PAS
PCA200
Delta-8
Electrodes
Profiler SGA
GLpH
Vinotrate
SOFTWARE
RefinementPro 2
Fast D-PAS
Solubility
ADME Boxes
ANALYTICAL SERVICE
GOLD STANDARD
logP
Solubility
pKa
SCREENING
Permeability
Solubility
logD
SERVICE AND SUPPORT
Maintenance
Service
Technical support
Material Safety Datasheets
Certificates of conformity
Electrode warranty forms
SCIENCE
PhysChem
pKa
logP
Solubility
Wine chemistry
TRAINING
Training sub menu
On-line training
In house training
Training courses in USA
Training courses in the UK
LITERATURE
Literature sub menu
Brochures
Bibliography
Posters
Slides
CONTACT
ABOUT
History
News archive
Events archive