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Restore the sensing function of an Apera YD300 with the 601-S water-hardness electrode.
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APERA INSTRUMENTS / 601-S / AI4739
Restore the sensing function of an Apera YD300 with the 601-S water-hardness electrode. Its integrated measuring element, reference system and temperature sensor simplify hardness testing with the compatible meter.
Use with the YD300 and follow its calibration and sample-preparation instructions. The 15–40°C electrode range is the relevant sample-temperature limit.
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 601-S water-hardness/temperature electrode. YD300 meter and calibration solutions 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 the YD300 hardness standards and sample procedure. The 601-S is a hardness electrode, not a calcium-only ISE.
Review YD300 hardness 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.
YD300 water-hardness meter kit — the specified host 602 flexible electrode holder
Apera identifies it as the replacement electrode for the YD300 water-hardness meter.
Water hardness with the YD300, using integrated measuring, reference and temperature elements.
0.015–10 mmol/L, or 1.5–1000 mg/L expressed as CaCO₃.
15–40°C (59–104°F).
An 8-pin connector; this does not make it universally compatible with all 8-pin meters.
No. The YD300 hardness system and a calcium-specific ion electrode serve different measurement methods.
No. This is the replacement electrode listing.
Follow the YD300 instructions for electrode conditioning, calibration and sample testing before relying on results.
Review 601-S AI4739 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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