vwr international 58016-618 spectrophotometer cell unltraviolet 2 pack

Description

this is a two pack of vwr international 58016-618
spectrophotometer cells
ultavoilet, cylindrical, stopper
10 mm light path
Far UV Quartz
Wavelength Range of 170–2700 nm
Matched Sets Available
Fully Heat-Fused Construction
Manufactured from Spectrosil quartz for accurate readings over the entire UV range to near infrared range. Due to the fully heat-fused construction (no intermediate materials or adhesives) and careful annealing to remove any strain, there is no optical or physical distortion of the two optically polished windows. Matched cells fall well within the accepted pathlength standard of ±0.01mm. Cells exhibit a transmission tolerance within 1.5% at 200nm.
In semi-micro cells, the walls parallel to the light path are thickened, decreasing the sample chamber width to 4mm. Sub-micro cells have a Z dimension that must be matched between the cell and the instrument to be used.
i veleive these to be used. these are in great working condition. no chips or scratches or cracks.
these seem to have a new number for them and it is --- 414004-071
ask other questions you have before you purchase--- there are no instructions with this