5 / 8 mm Quartz Flow Cell: Planning Two Optical Directions (MQQFL035)
Custom design guide · MQQFL035
MQQFL035 provides nominal 5 / 8 mm paths across a rectangular flow chamber, with a quartz tube at each end. Its body is 50 mm long and fixed overall length is 70 mm. Choosing this layout involves two optical directions as well as room for the tubing.
The situations and proposed changes below are planning examples, not completed customer projects.
Structure and use · Current specifications · Selection details · Proposed changes · Before ordering · Buy or enquire
Show how each optical direction will be used
A dual-path enquiry starts with a measurement question: would two distances through the same solution help the method? For homogeneous solutions within Beer–Lambert conditions, the longer path gives greater absorbance at the same concentration and wavelength. The useful choice depends on the instrument's measurement range and the sample.
MQQFL035 brings nominal 5 mm and 8 mm directions into one flow body. A proposed setup might rotate the cell between measurements or provide separate optics; each needs its own alignment and tubing plan. The path ratio does not predict a detection-limit improvement and should not be used to scale fluorescence directly.
Current MQQFL035 configuration
Open engineering reference R01 and PDF
Source-based dimensions and configuration for discussion. Unconfirmed geometry and tolerances remain to be agreed; this is not a manufacturing-release drawing.
View full-size engineering reference · Download the complete English engineering reference PDF
Keep the body length separate from both paths
The source body is 50 × 10 × 10 mm; the 70 mm fixed overall length includes the end tubes. The transverse 5 / 8 mm sample paths are different dimension objects from those lengths.
Both connection tubes are 5 mm OD / 3 mm ID. Because one outside tube diameter equals one path value, label each 5 mm dimension explicitly on a custom drawing. Add fitting and hose space beyond the fixed assembly.
Plan the tubing for switching direction
With a rotating holder, sketch both operating positions and the route the hoses take between them. With separate optics, mark the source and receiver for each direction. This makes it easier to see whether the connections need to move before changing the optical body.
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Retain both paths and revise the end connections
If the 5 / 8 mm paths suit the method but the ends obstruct installation, mark the permitted overall length and fitting approach. Keep the holder and optical-switching arrangement on the same drawing.
The ends and cavity need to be assessed together: a shorter assembly may also require a different internal layout. State which matters most—optical path, available space or sample volume. The listed 1.5 mL remains a nominal capacity with an unconfirmed working-level definition; it should not be replaced by a calculation from the 8 × 5 × 43 mm cavity dimensions.
Checks to agree before ordering
- Directions: Label the 5 mm and 8 mm paths and their datums on the drawing.
- Switching: Check holder, hose and fitting interference in both intended positions.
- Volume and flow: Confirm the nominal-volume definition and review filling, flushing and operating conditions.
Sample and cleaning conditions
Agree sample and cleaning conditions for the complete item, including wetted caps, seals and fittings. Give chemical identity, concentration, temperature and contact time. Avoid hydrofluoric acid; strong alkalis, heat and prolonged exposure also need review. A JGS1 material label alone does not establish suitable operating conditions.
Order this configuration or discuss a change
View MQQFL035 specifications and current pricing. If you need a delivery date, ask about availability and preparation or production time before ordering.
For a modified version, send the brief below with a dimensioned drawing or labelled sketch. We review the proposed configuration and confirm feasibility, quantity, inspection scope, pricing and production time in the quotation.
Copy this custom-enquiry checklist
Reference SKU: MQQFL035
Keep: 5 / 8 mm target paths; rotation or separate-optics arrangement: ____
Overall-length limit, fittings, hose supports and holder sketch: ____
Medium, working-volume requirement, orientation, flow and pressure: ____
Sample and cleaning liquids, concentrations, temperature and contact time: ____
Wavelength, critical tolerances and required inspection/documents: ____
Quantity, required date and destination: ____
Send your sketch and requirements. Mark the features to keep and the changes to assess.
Technical reference
Configuration reference: MQQFL035 product specifications. Specifications checked 26 October 2026. General principles guide selection; they do not establish measured performance of this cell.
For the absorption principle, see the IUPAC Gold Book: Beer–Lambert law.
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