Jenway have recently updated their dissolved oxygen probes. To ensure you get the correct probe please read the following:

Jenway have an extensive range of dissolved oxygen probes suitable for portable or bench dissolved oxygen meters. The probes for the dissolved oxygen meters have all been updated in order to unify the range.

The dissolved oxygen probes have been redesigned so that they are all the same diameter. As a result of this redesign the new probes have a narrower diameter than the old probes.

The new probes are easily identified with a B after the probe part number on the probe or meter packaging.

When any dissolved oxygen probe is purchased either with a dissolved oxygen meter or by itself it is supplied with one membrane fitted and two spare membranes.

To compliment the new probe design the dissolved oxygen membranes have also been redesigned. The photo below shows the difference between the old and new membranes.

 

OLD                                              OLD                                                 NEW

541 551                                       522 019                                           522 019B
Internal Diameter: 15mm        Internal Diameter: 10mm              Internal Diameter: 8mm
Height: 24mm                            Height: 25mm                                Height: 19mm

The old membranes 541 551 and 522 019 are supplied in containers and the new membranes are not supplied in containers. The new membranes will not fit on old probes and old membranes will not fit on new probes.
Jenway will continue to support existing customers by stocking membranes for the old probes. For details on which part number to order refer to the relevant dissolved oxygen meter and probe section below:

 

 

 

 

 

 

 

 

 

 

 

Dissolved oxygen meter 970
Old probe – part number 970 231

Probe length: 153mm
External diameter: 12mm
For this probe order the following accessories:

Probe Number	Membrane kit	B.O.D Kit
970 231	522 019	552 050

New probe – part number 970 231B

Probe length: 190mm
External diameter: 12mm
For this probe order the following accessories:

Probe Number	Membrane kit	B.O.D Kit
970 231B	522 019B	552 050B

Dissolved oxygen meter 9500
Old probe – part number 522 023

Probe length: 153mm
External diameter: 12mm
For this probe order the following accessories:

Probe Number	Membrane kit	B.O.D Kit
522023	522 019	552 050

New probe – part number 522 023B

Probe length: 190mm
External diameter: 12mm
For this probe order the following accessories:

Probe Number	Membrane kit	B.O.D Kit
522 023B	522 019B	552 050B

Dissolved oxygen meter 9150 and 9200

Old probe – part number 541 520

Probe length: 160mm
External diameter: 20mm
For this probe order the following accessories:

Probe Number	Membrane kit	B.O.D Kit
541 520	541 551	N/A

 

New probe – part number 541 520B

Probe length: 190mm
External diameter: 12mm
For this probe order the following accessories:

Probe Number	Membrane kit	B.O.D Kit
541 520B	522 019B	552 050B

 

Availability

The table below shows the dates which the old probes were discontinued and replaced with the new probes:

Unit	Old Probenumber	New Probenumber	Date replaced
970	970 231	970 231B	September 2009
9500	522 023	522 023B	November 2009
9150	541 520	541 520B	December 2009
9200	541 520	541 520B	December 2009

 

Pricing
The list price for the new probes and new membrane kits is the same as the old probes and old membrane kits.

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