For immediate assistance, call Techkon USA at 978-777-1854 or email Info@TechkonUSA.com
$150
The calibration chart can be used to calibrate devices including the RS400 and RS800.
This battery is for the SpectroDrive1.
The SpectroDens4 ships with a standard 3mm aperture. Additional apertures for the SpectroDens4 are available in 1.5mm or 3mm sizes.