Documentation
📄 750 Series II Conductivity & Resistivity Replacement Parts Price List (PDF)📄 750 II Range Selection Guide (PDF)A range code must be specified
Myron L prints this part as RMXXXA, where XXX is a placeholder for the range code — for example 50AM-124. The meter is supplied with the correct scale (dial) for the range you specify, so the range must match the instrument it is going into. Pick the code from the 750 II Range Selection Guide and send it with your enquiry, or tell us the model and serial number of the instrument and we will work it out.
Fitment
For Myron L 750 Series II Conductivity/Resistivity inline Monitor/controllers. Myron L’s parts lists are model-specific and several parts differ between analog and digital, and between monitor-only and monitor/controller versions. Tell us the exact instrument model and serial number and we will confirm the part is right before anything ships.
Ordering options vs. ordering parts
Some 720/750 features are ordered as a suffix on a new instrument (for example 723II-4A-35BL) rather than as a separate part. Those option codes are listed on the Monitor/controller pages. This listing is the standalone service part.
Warranty
Myron L’s published warranty covers instruments (two years) and pH/ORP sensors (six months). Service and OEM parts are not instruments — ask us for the applicable terms before purchase.
Question? Please contact us
Part number, description and fitment taken from the 750 Series II Conductivity & Resistivity Replacement Parts Price List (rev 11-25, effective 1 January 2026) published by the Myron L® Company. Myron L reserves the right to change design, specifications and prices without notice — please confirm the part against your instrument before purchase. Myron L® is a registered trademark of the Myron L Company.