SBM21 tubes

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Geiger
Posts: 10
Joined: 15 Oct 2019, 18:02
Location: Belarus
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SBM21 tubes

Post by Geiger » 18 Feb 2020, 01:22

Hello,
I have for sale from old stock SBM-21 miniature Geiger-Muller counter (russian name - СБМ-21).
New. Factory packaging: sealed box. 200pcs in pack.
Negotiated price (request in pm or via e-mail).
Details of payment in the signature.

Specifications SBM-21:
Gamma sensitivity Cs137  at P=10 mkR:  6.5...9.5 pulses/sec
Working range:        350...475 V
Start of counting:     260 to 320 V
Slope of the current-voltage characteristic, % / V, not more than:  0,15
Plateau length:    at least 100 V
Amplitude of the voltage pulse:  at least 50V
Maximum counting:  no more than 650 pulses/sec
Background noise:  no more than 0.2 pulses/sec
Total length: 21 mm
Size: 6 x 16 mm
Weight: 0.8 grams

Since the packaging is sealed, the geiger counters have not been tested.
The appearance and standard factory packaging of the geiger counters will be attached a little later.

If anyone is interested, write to me: si8b@tutanota.com
Attachments
IMG_4079.JPG
Last edited by Geiger on 10 Oct 2021, 04:15, edited 15 times in total.

User avatar
Geiger
Posts: 10
Joined: 15 Oct 2019, 18:02
Location: Belarus
Contact:

Re: SBM21 miniature Geiger-Muller counter

Post by Geiger » 19 Feb 2020, 01:36

This is a real photo - standard factory packaging and tubes.
Attachments
IMG_4074.JPG
07309Img.jpg
IMG_5941.jpg
Valentine
Belarus Minsk si8b@tutanota.com
Offer: pancake G-M counter SI8B (sales price) 85$/pcs+shipping
and mini geiger tube SBM21 (from 200pcs sealed factory packaging). NOS.
I accept payment in $/€/GBP/AUD/CAD (via wise.com or payoneer.com)

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