When you are shopping for spectroscopy, analysis, and detection equipment, the choice here is really between a complete instrument and a detector component. The GE Sievers TOC 900 LAB Portable TOC Analyzer with Power Cable and the SNM-42 Soviet Neutron Counter Tube Detector sit roughly $865 apart in listed price. One is a portable TOC analyzer; the other is a neutron counter tube. That price spread leads to a straightforward question: do you need the analyzer platform or the sensing tube?
Quick verdict
Choose the GE Sievers TOC 900 if your priority is a TOC analyzer platform and you are prepared to work on a unit sold as-is. Choose the SNM-42 if your priority is a lower-cost detector tube that you can build into your own setup. Both are detection equipment, but they answer different questions.
At a glance
| Product | Listed price | Condition |
|---|---|---|
| GE Sievers TOC 900 LAB Portable TOC Analyzer With Power Cable | USD 999.99 | For parts or not working |
| SNM-42 Soviet Neutron Counter Tube Detector | USD 135.00 | New - Open box (tested NOS) |
Where each product wins
- GE Sievers TOC 900 wins for analyzer-level work. It is the TOC analyzer of the pair and comes with its power cable. If your project calls for a TOC 900 LAB analyzer, this is the unit that gives you the make-and-model platform to work with.
- SNM-42 wins for detector-tube projects and lower-cost builds. With its lower listed price, the SNM-42 is the sharper starting point when you need a neutron counter tube rather than a full instrument.
Product notes
GE Sievers TOC 900 LAB Portable TOC Analyzer With Power Cable
At USD 999.99, the GE Sievers TOC 900 is the higher-priced entry and the full analyzer in this pairing. It is a portable TOC analyzer and includes a power cable, so it fits when your project centers on a TOC 900 LAB unit. The condition is for parts or not working, and the unit was tested to power on before being sold as-is from the pictured physical state. The concrete limitation is that it is not described as a ready-to-run analyzer. Pick it for the analyzer platform itself, and go in expecting to handle repair or parts work.
SNM-42 Soviet Neutron Counter Tube Detector
The SNM-42 Soviet Neutron Counter Tube Detector is the lower-priced side of the pair at USD 135.00, about $865 below the GE. It is offered as tested new old stock in open-box condition, and it is a neutron counter tube detector with a Geiger-counter-type sensing element. The concrete reason to choose it is that low price combined with tested new old stock status: you get a detector component without paying analyzer-level money. The limitation is that a counter tube is not a complete analyzer. You will still need the rest of the detection chain, such as power and readout electronics, before the tube can do useful work.
Final choice by use case
- Need the TOC analyzer platform? Go with the GE Sievers TOC 900. It is the full analyzer in the comparison and the one to treat as a repair or parts project.
- Need a neutron detector tube at a lower price? Go with the SNM-42. It gives you a tested new old stock counter tube at the lower listed price.

