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The Apera F501-S is the 3-in-1 fluoride electrode for WS100 and WS200 meters.
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Fluoride electrode is paired only with the catalogued 1000 ppm fluoride ion calibration solution.
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APERA INSTRUMENTS / F501-S / AI4729
The Apera F501-S is the 3-in-1 fluoride electrode for WS100 and WS200 meters. A combined fluoride sensing element, reference system and thermistor provide a single-probe replacement for this dedicated fluoride-meter family.
Use with the specified WS-series meter and follow its method for conditioning, calibration and TISAB addition. This F501-S is distinct from the IndSen 2071M-F-TS electrode.
Check the sensing method, connector and temperature requirements before ordering. A connector that fits does not by itself establish compatibility.
Linked cards open current store listings. Other cards compare configurations; they do not imply current storefront availability.
One F501-S fluoride ion/temperature electrode. Meter, fluoride standards and TISAB are separate.
The combination probe brings the measuring element, reference system and thermistor into one body. This close-up from Apera’s photo resources shows the sensing end without changing the product’s proportions.
Keep the sensing surfaces and reference junction in contact with the sample and follow the host meter’s preparation and calibration procedure.
Use appropriate fluoride standards and the TISAB/sample-conditioning procedure in the WS-series instructions. F501-S and IndSen 2071M-F-TS are different models.
Review WS100 fluoride meter kit and WS200 fluoride meter kit for the specified host setup.
Confirm the exact meter model and replacement part number. An 8-pin connection alone does not make every Apera electrode interchangeable.
Protect the connector and follow the meter/electrode care instructions after testing.
Use the complete Product Specifications tab to verify the measurement range, temperature limit, connector and order details against your application.
WS100 fluoride meter kit — compatible host WS200 fluoride meter kit — compatible host 602 flexible electrode holder
Apera WS100 and WS200 fluoride meters.
0.02–1900 ppm as specified in Apera’s product catalog.
Yes. The 3-in-1 structure includes a thermistor along with fluoride and reference elements.
An 8-pin connector. Confirm the exact host model rather than relying on connector appearance alone.
The F501-S catalog specification is 0–80°C (32–176°F).
Yes. Use suitable fluoride standards and the sample-conditioning procedure required by the meter instructions.
No. These are different electrode models with different published specifications; choose the electrode identified for your meter.
No. This listing supplies the replacement electrode only.
Review F501-S AI4729 against your measurement method, sample limits and host connection. Return to the price and ordering controls when the configuration fits your work.
Manufacturer warranty coverage is subject to Apera’s terms for this exact product. Contact Blue Tiger Scientific for help confirming coverage or submitting a manufacturer warranty inquiry.
For technical support, provide the manufacturer part number, meter model and a description of the issue. Blue Tiger Scientific can help coordinate product selection and manufacturer support.
For a return request, contact Blue Tiger Scientific before sending the product back. Eligibility and any authorization requirements follow the applicable store return policy; manufacturer warranty service and store returns are separate processes.
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