Envco – Environmental Equipment

MSDS & Certificates of Analysis
We have a MSDS for all of the blends that we sell. We use the MSDS library of Airgas, the supplier of our primary 1% NIST traceable gas standards. We also generate a Certificate of Analysis for each cylinder or frequently the CofA will cover a group of cylinders.

Product Shelf Life
• Reactive gases and blends containing at least one reactive gas – 12 months or less. (See Shelf Life Chart for exceptions)
• Non-reactive gases and blends of exclusively non-reactive gases – 36 months.
• Our labels reflect the certification date of the product.

Zero Air Packaged in Steel Cylinders
17S
Capacity: 17 Liters (0.6 Ft3)
Maximum Pressure: 240 psig
Material of Construction: Steel
Dimensions: 3” Dia x 10¾” Length
DOT Specification: 39NRC
Thread Connection: CGA 600: 1”-20
Required Regulator: CGA 600 Series

34S
Capacity: 34 Liters (1.2 Ft3)
Maximum Pressure: 500 psig
Material of Construction: Steel
Dimensions: 3” Dia x 10¾” Length
DOT Specification: 39NRC
Thread Connection: CGA 600: 1”-20
Required Regulator: CGA 600 Series

103S
Capacity: 103 Liters (3.6 Ft3)
Maximum Pressure: 1000 psig
Material of Construction: Steel
Dimensions: 3¼” Dia x 13½” Length
DOT Specification: 39NRC
Thread Connection: CGA C10: 5/8”-18
Required Regulators: CGA C10 Series

221S
Capacity: 221 Liters (7.8 Ft3)
Maximum Pressure: 260 psig
Material of Construction: Steel
Dimensions: 9” Dia x 16½” Length
DOT Specification: 39NRC
Thread Connection: CGA 165: ¼” Flare
Required Regulators: CGA 165 Series

Part Numbering System
We utilize a hybrid smart number – the part number reveals important details about the product.
Format: AA-BBB-C-DDDD

1. The first two characters (AA) define the calibration gas: “01” = Ammonia
2. The next three characters (BBB) are sequential and define the concentration.
3. The next character (C) defines the balance gas: “A” = Air, “N” = Nitrogen (N2)
4. The next characters (DDDD) define the cylinder size and material of construction:
“17S” = 17 liter steel
“34S” = 34 liter steel
“34A” = 34 liter aluminum
“58A” = 58 liter aluminum
“74A” = 74 liter aluminum
“103S” = 103 liter steel
“221S” = 221 liter steel

Ordering Information
Zero Air = Non-Reactive Gas
98-000-0-17S Zero Air (THC < 1 ppm) (O2 = 20% - 22%) 17 litre
98-000-0-34S Zero Air (THC < 1 ppm) (O2 = 20% - 22%) 34 litre
98-000-0-103S Zero Air (THC < 1 ppm) (O2 = 20% - 22%) 103 litre
98-000-0-221S Zero Air (THC < 1 ppm) (O2 = 20% - 22%) 221 litre

Regulators for Non-Reactive Gases
RCGA600BNPxxx CGA 600 Series - Fixed Flow Rate
RCGA600BNPDFR CGA 600 Series - Demand Flow Rate
RCGA165BNPxxx CGA 165 Series - Fixed Flow Rate
RCGA165BNPDFR CGA 165 Series - Demand Flow Rate
RCGAC10BNPxxx CGA C10 Series - Fixed Flow Rate
RCGAC10BNPSFR CGA C10 Series - Selectable Flow Rate
RCGAC10BNPDFR CGA C10 Series - Demand Flow Rate
RCGAC10TRGxxx CGA C10 Series - Trigger Spray