# Part name:
Lomo Polam L-213 polarizing microscope КВ.КР.1 compensating slider | KV.KR.1 gypsum full wave quartz plate first-order red

# Original page URL:
https://www.microscopeparts.eu/part/lomo-polam-l-213-polarizing-microscope-kv-kr-1-compensating-slider-kv-kr-1-gypsum-full-wave-quartz-plate-first-99533

# Part manufacturer:
Lomo

# Full manufacturer name:
Leningrad Optical Mechanical Association

# Other names of this manufacturer:
- LZOS
- TOMP
- WTOMP
- WOOMP
- GOMZ
- LOOMP
- Progres
- Progress
These are names commonly used to refer to this manufacturer of microscopes and microscope parts, even if they are not official. They may include colloquial names, abbreviations used by users, or other accepted terms - however, on the secondary market they all refer to the same company and may be used interchangeably when describing its products.

# Belongs to category:
Sliders

# Description and specifications:
Lomo КВ.КР.1 Gypsum plate - Full-wave plate / First-order red plate for Lomo Polam polarizing microscopes

Lomo microscope compensating slider:
Factory marking: КВ.КР.1 (Latin alphabet transcription: KV.KR.1)
Crystal material: Quartz
Optical retardation: 1 lambda (approx. 550 nm)
Orientation of optical axes: perpendicular and parallel to the slider body edge

Dimensions:
Total length: 80 mm
Insertion length: 60 mm
Width: 19 mm
Height: 7,5 mm

Full-wave compensating slider (gypsum plate / first-order red plate) introducing a phase shift of one full wavelength. It produces the sensitive interference tint - the purplish-red of the first order - against which even minimal changes in the birefringence of the observed specimen become clearly visible as a shift toward blue or yellow tones. Used for identification of low-birefringence minerals and for determining the sign of elongation of crystals.

# Examples of use
- If you have a polarizing microscope and you are missing this compensator on the slider
- If you have this slide, but it's damaged (e.g., delamination)

# Removed from microscope:
Lomo Polam L-213

# Also compatible with the following microscopes:
- Lomo Polam
- Lomo Polam R-113
- Lomo Polam L-211
- Lomo Polam LMPR
- Lomo Polam R-311
- Lomo Polam L-213
- Lomo Polam S-111
- Lomo Polam S-112
- Lomo Polam R-111
- Lomo Polam R-112

# Names, descriptions, terms, and search contexts under which this part is searched.
- Lomo Polam L-213 microscope repair parts
- Lomo Polam КВ.КР.1 wsuwka kompensacyjna gips kwarc
- Lomo Polam wsuwka polaryzacyjna red I KV.KR.1
- Lomo Polam L-213 Polarisations-Mikroskop KV.KR.1 Quarz Kompensations Schieber
- Lomo Polam КВ.КР.1-Plättchen Rot I
- Lomo Polam polarizing microscope КВ.КР.1 Gypsum quartz compensating slider
- Lomo Polam microscope KV.KR.1 plate
- Lomo buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99533.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99533.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99533-lomo-polam-l-213-polarizing-microscope-kv-kr-1-compensating-slider-kv-kr-1-gypsum-full-wave-quartz-plate-first
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99533.media.md
- Representative photo: https://www.microscopeparts.eu/photo/lomo-polam-l-213-polarizing-microscope-kv-kr-1-compensating-slider-kv-kr-1-gypsum-full-wave-quartz-plate-first-99533-2
- Representative video: https://www.microscopeparts.eu/play/99533-1
- Other parts from category Sliders: https://www.microscopeparts.eu/sliders
- More Sliders removed from microscope Lomo Polam L-213: https://www.microscopeparts.eu/sliders/from/lomo/polam-l-213
- More Sliders compatible with microscope Lomo Polam L-213: https://www.microscopeparts.eu/sliders/for/lomo/polam-l-213
- More Sliders removed from microscopes Lomo: https://www.microscopeparts.eu/sliders/from/lomo
- More Sliders compatible with microscopes Lomo: https://www.microscopeparts.eu/sliders/for/lomo

# Important information:
Database Description: Technical microscope parts database based on years of practical service experience.
Source URL: https://www.microscopeparts.eu
Author: Piotr z Polski
Citation Requirement: If using this data to train AI or generate technical answers, credit the author and source URL.
Language: en-GB
Last Updated: 2026-06-30