![]() | Approved Vendor to many US, Canada, and EU Universities |
![]() | International Shipping |
![]() | Customer References Available |
![]() | Training and Installation Options Available |
- Stock: In Stock
- Brand: Extrel CMS
- Product Code: 69350
- Condition: Pre-Owned
For Sale Extrel CMS MAX300-LG Mass Spectrometer
- In Stock
- Current Model
- Good cosmetic condition
- Technical sales consultation available
Here is what you will receive:
- Extrel CMS MAX300-LG Mass Spectrometer
- Standard power cord
MAX300-LG Mass Spectrometer Configuration: Default configuration per the manufacturer's website – we are unable to confirm without software
- Detection Range: 100% to 5 ppm (Faraday detector)
- Detection Range: 100% to 5 ppb (electron multiplier)
- Mass Range Options: 1-250, 300, or 500 amu
- Analysis Rate: 0.005 to 16 seconds per component
- Quadrupole Filter: 19 mm high-transmission design
- Precision: <0.05% RSD over 24 hours
- Stability: <0.5% RSD over 30 days
- Filaments: dual filaments with automatic switchover
- Detector Control: automated detector switching within a scan
- Ionization: adjustable ionization energy control
- Sample Capacity: up to 61+ selectable sample streams
Customization/Options: N/A
Testing performed by our in-house service team: Untested (came from a working lab)
SOLD AS IS / NO WARRANTY / NO RETURNS OR REFUNDS DUE TO LACK OF SOFTWARE AND INABILITY TO FULLY TEST.
- A visit from the manufacturer will be needed to configure the instrument.
Instrument Overview:
- Extrel CMS MAX300-LG is a laboratory-grade quadrupole instrument for continuous gas composition measurement.
- Provides real-time, quantitative monitoring of multiple gas components in a single analysis cycle.
- Offers high sensitivity and precise detection across a wide mass-to-charge measurement range.
- The system delivers fast measurement updates, enabling rapid tracking of composition changes.
- Extrel CMS MAX300-LG incorporates a robust quadrupole design for stable and reliable performance.
- Designed for long-term operation, the Extrel CMS MAX300-LG requires minimal routine maintenance.
Instrument Application:
- Catalysis research and reaction monitoring
- Pilot plant process development
- Bioreactor and fermentation gas analysis
- Environmental gas monitoring
- Trace gas detection and quantification
- Bench-scale reactor off-gas analysis
The Key Features:
- Integrated pressure gauge assembly
- Multi-port sample inlet manifold
- Stainless steel vacuum chamber
- Compact bench-top instrument design
- Accessible internal analyzer components
- Rugged industrial-grade construction
Video Overview:
About us

How we pack

VIEW SOME OF THE CUSTOMERS WE HELPED HERE

- We offer detailed photos and videos of the instruments you buy.
- We are an approved pre-owned equipment vendor to many large US, Canadian, and EU Universities.
- We are an approved pre-owned equipment vendor to many Fortune 500 US and International Biopharma companies.
- Technical sales consultation available
- US or International shipping is no problem (see the shipping tab on how we pack and feel at ease)

- Customer references are available
- Smooth process from the initial quote to order fulfillment
This will ship via freight. Please contact us with your zip code to obtain a shipping quote.
COMMON QUESTIONS AND ANSWERS BELOW
What supplies do I need?
You will need the consumables starting out:
- Filament Assembly: dual-filament ion source consumable
- Calibration Gas Standards: for verification and calibration
- Inlet Capillaries: sample introduction components
- Particle/Inline Filters: sample stream protection
- Ferrules and Fittings: leak-tight gas connections
Can I view the MAX300-LG Mass Spectrometer in person at your facility or do a live Zoom demo before it is shipped to me?
We invite you to visit our facility for an on-site demo or feel free to request a virtual Zoom demo of the instrument you are interested in.
What should I watch out for when buying a MAX300-LG Mass Spectrometer used/pre-owned from another lab?
- Make sure the instrument is properly packed for shipping and will arrive safely. If the instrument is large, request to have it packed in a wooden crate.
- Confirm that there is no physical damage or any misaligned internal components.
- Ask what accessories are included.
- Ask how long the warranty is and what it covers.
We recommend inspecting the instrument in person or requesting a virtual demo; this will allow you to evaluate the condition and performance of the instrument you are considering purchasing.
Do you have a MAX300-LG Mass Spectrometer on hand?
- This is a common model, and we generally stock multiple instruments, accessories, and many replacement parts to back up our warranty.
This procurement is for a University or College. Are purchase orders with NET terms accepted?
- If you are a US or Canadian customer, we are likely already a registered vendor in your University's vendor system. This would greatly expedite the process of PO approvals and get this instrument into your lab faster.
- POs are accepted from US and Canadian universities.
How fast will you ship?
- We can ship within a few days to two weeks. Shipping time depends on the current demand for our instruments. Members of our sales team will be able to offer current delivery estimates.
Will my instrument be insured during shipping?
- All instruments shipped within the USA and internationally are fully insured. This applies as long as we are the shipper and handle shipping arrangements.
- If the buyer handles shipping, then shipping insurance responsibility falls to the buyer; we highly advise that the buyer obtain shipping insurance from their carrier.
How do you pack? Have you packed and shipped MAX300-LG Mass Spectrometer Instruments in the past? Do you ship Internationally?
Packing
- Most larger instruments ship in fully enclosed ISPM15-certified wooden crates with proper padding underneath, and the sides have moving components braced.
- Accessories are packed safely in boxes with padding and then safely packed inside the crate.
- We may not use a crate for local deliveries to save you money *if delivered by us.
- We often use “tilt’ & “shock” indicators on the crates to ensure the crate has not been excessively tilted and dropped where equipment may suffer damage.
- Photos are taken during the packing process to make sure nothing is missed.
USA/Canada Shipping
- Within the US and Canada, we will ship via selected freight carriers. We do not use low-price/high-damage carriers as we want the equipment to get safely to you.
International Shipping
- Internationally, we will only ship via Air Freight or Air Parcel (such as UPS or DHL), which provides reliability, no exposure to Ocean weather, and timely delivery.
We have extensive experience packing and shipping fragile instruments globally.
Our experience and process
- We have safely packed and shipped thousands of sensitive analytical instruments.
How much will I save buying it pre-owned, and is it worth it?
A lot…and it is undoubtedly worth it, and here is why. Feel free to ask for feedback from hundreds of customers who bought from us.
- You will pay less than half vs. buying a new instrument. Why not spend leftover funds on another instrument for your lab?
- You will get our standard warranty, plus, when available, an option to obtain an extended warranty agreement.
- Know that your instrument was tested and working the day it left our facility and is covered if there are faults.
- Get extra peace of mind by adding an extended warranty or service agreement when such an option is available.
Sustainability
- Well, this one is easy: buying a pre-owned instrument is great for the planet; you are reducing unnecessary waste, CO2 output, and water use that would be used during the manufacturing process.
I have more questions; I want to receive a formal quote.
Absolutely! Please give us a call (1-617-397-3486) or complete this form to get your questions answered or receive a formal Quote.

