200g.

Specification:
Name: DIY CO2 Generator System+Solenoid+Bubble Counter & Check Valve
Main Material: Aluminum Alloy
Main Color: Silver
Voltage: 100-240V
3 Type Optional: CO2 Generator System/CO2 Generator System+Bubble Counter with Check Valve/CO2 Generator System+Bubble Counter with Check Valve+Solenoid
Raw Material Ratio：
A Bottle: Citric Acid 200g+Water 600g
B Bottle: Baking Soda 200g+Water 200g

Note:
1. The package does not contain containers for reaction raw materials. Please prepare 2* 1.5L or large plastic beverage bottles (coke plastic bottles are the best). Do not use bottles or beer bottles to avoid bottle accidentally cracking or exploding due to excessive pressure in the bottle.
2. Boost pressure operation: If the pressure gauge shows that the pressure is too low to reach 1KG, the boost pressure operation is required. Customer needs to open the trim valve to release the gas, then close the trim valve and shake the bottle (the AB bottle is shaken together) on order to react the raw materials faster. Repeat the operation, and then observe the pressure until the pressure rising. If the pressure achieve the ideal pressure you could stop the operation. The best starting pressure is 1KG.
3. Don't open bottle directly when there's still on pressure, please wait for its automatic pressure release.

Package Information:
Package Size: 22 * 12 * 6cm
Package Weight: 460g
Gift Box Packaging

Packing List:
1* CO2 Generator System
1* Solenoid with Plug
1* Bubble Counter with Check Valve
1* Check Tube Kits
1* Pressure Gauge
1* Safety Valve
1* Fine Adjusting Valve
1* Some Sealing Rings
1* 1.5m Tube
2* Suction Cup
1* Manual