--- type: product schema_version: 1 stock_number: "66059-12" canonical_url: "https://www.artisantg.com/Scientific/66059-12/Sierra-Instruments-Side-Trak-840L-Low-Flow-Gas-Mass-Flow-Controller" json_url: "https://www.artisantg.com/Scientific/66059-12/Sierra-Instruments-Side-Trak-840L-Low-Flow-Gas-Mass-Flow-Controller.json" generated_at: "2026-11-07T03:51:24.004Z" last_updated: "2026-04-06T13:32:15.610-05:00" --- # Sierra Instruments Side-Trak 840L Low Flow Gas Mass Flow Controller _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Sierra Instruments - Model: Side-Trak 840L - Condition: Used and in Excellent Condition - Price: $350.00 USD - Availability: In stock, 2 available - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 2 lb - Shipping dimensions: 12X9X6 in ## Categories - Lab & Analytical > Controllers (primary) ## Details This Sierra Instruments Side-Trak 840L Low Flow Gas Mass Flow Controller is used and in excellent condition. This unit is also known as the Side-Trak III. ### Configuration - Gas: O2 - Range: 0-10 - Units: SLPM - Orifice: .055 Inches ## Images - - - -