Micro Polarimeter Tube: Defining the Sample Space and Filling Volume
MQOPT022 is the 50 mm micro polarimeter-tube reference. Its image marks a 4 mm bore and approximately 620 µL, but that value is not a method-verified minimum working sample volume.
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Quartz Combustion Boats for TGA, LECO, and Tube-Furnace Analysis (34-SKU Selection Guide)
Selection and sizing guide for quartz combustion boats — TGA, LECO C/S/N analysers, tube-furnace pyrolysis, semiconductor, and battery cathode work. 34 SKUs, custom geometry on 2-piece MOQ.
Opaque Zeroing Cuvette: Distinguishing Light Blocking from a Blank Sample
C100CS is the opaque cuvette-form option, shown with an open cavity. Its role must follow the instrument’s zeroing or light-blocking procedure; it is not a solid glass block or a certified photometric standard.
Aluminium-Coated K9 Right-Angle Prism: Specifying the Turning Surface
The nominal 10 mm K9 right-angle-prism option is an optical turning component, not quartz sampleware. A useful enquiry identifies the reflecting face, clear areas and holder contacts before asking about optical performance.
Fused Quartz Labware: When to Upgrade from Borosilicate (17-Family Selection Guide)
Selection guide to MachinedQuartz’s 17 fused quartz labware families and 133 SKUs — when fused quartz beats borosilicate (and when it does not).
Square Quartz Gas Cell: Planning Several Optical Access Directions
C204WS is a square quartz gas-cell reference with four side optical-access directions and a single top stem. The window layout and the filling or sealing requirement need to be specified separately.
Calcium Fluoride (CaF2) Windows for FTIR, ATR & Mid-IR Applications
A calcium fluoride (CaF₂) optical window is an alkali fluoride single-crystal window with high transmission from 130 nm (vacuum UV) to 9 µm (mid-IR), used in FTIR cells, ATR accessories, mid-IR laser optics, and X-ray spectroscopy where standard quartz becomes opaque above 3.5 µm and sapphire above 5 µm. CaF₂ is mechanically softer than quartz
Injectable Silicone Cuvette Cap: Matching the Sampling Access
MQACC047 is the blue silicone cap option with a marked injection opening for a 10 mm cuvette format. Its selection depends on the actual mouth and sampling tool, not on the nominal path label alone.
49-Well Alumina Spot Plate: Keeping Samples in Defined Positions
The 49-well alumina spot plate provides multiple defined sample positions in a ceramic body. Its custom brief centres on well geometry and loading access; it is not the quartz optical microplate discussed elsewhere in the series.
Sapphire Windows for High-Pressure, High-Temperature & Laser Applications
A sapphire optical window is a single-crystal Al₂O₃ window with exceptional mechanical strength (compressive strength 2,000 MPa vs quartz 1,100 MPa), wide transmission range (170 nm to 5.5 µm), and chemical inertness — the standard choice for high-pressure cells (up to 2,000 bar), laser optics above 100 W/cm², high-temperature flow cells to 1,500 °C, and
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