350g Weather Balloon, Natural Latex Humidity Generator Accessories & Parts 2x 5/16" lock washers

2x 5/16" lock washers

suitable for extreme ambient conditions

10°C or better

and absolute humidity

350g Weather Balloon, Natural Latex Humidity Generator Accessories & Parts 2x 5/16" lock washersProduct Information Weight: 350 grams Material: Natural Latex Inflation Gas: Helium Hydrogen Payload: 1 2 lbs Rate of Ascent: 350m min Burst Diameter: 13. 5ft Burst Altitude: 48,000 70,000ft Neck Diameter: 3. 0cm Neck Length: 12. 0cm Packaging Options: Standard Manufacturer's Packaging: Balloon sealed in the manufacturer's plastic bag. UV Resistant Packaging (+$2): Balloon, in manufacturer's packaging heat sealed or banded in a black UV Resistant Bag.