Dissolve 10.6 grams sodium carbonate anhydrous in enough water to make 100ml solution and use 1ml of this (which is almost exactly 20 eyedropper drops) per liter of water in your cell.
0.11g of sodium carbonate anhydrous in 1 liter of water is about a 0.01 molar solution.
Are you trying to use this directly as your cell water? If so, you're using TEN TIMES too much sodium carbonate! I bet that would taste soapy and feel slippery.
The correct ratio is 1ml of 1M sodium carbonate per 1000ml of distilled water which makes the cell a 0.001 molar solution, NOT a 0.01 molar solution as you're making.
Just make a 30-60 ml 1 molar stock solution in a small eye dropper bottle (glass) and use 20 drops of this per liter of water for your cell. That little bottle of electrolyte will be very easy to store and it will last you a LONG time where as long as you keep it tightly capped so no water evaporates, you could theoretically use it to the last drop.
30ml of 1 molar sodium carbonate electrolyte using anhydrous is about 3.18 grams (call it 3.2grams), adding enough water to this to make 30ml. For 60ml it would be 6.36grams (call it 6.4grams) adding enough water to bring the total volume up to 60ml.
At least in the USA, eyedropper bottles are either 1oz or 2oz US (about 30ml or 60ml respectively) which is why I picked those sizes. If you pick a different size other than 100ml, just multiply 10.6g by the bottle volume in milliliters divided by 100 and use that amount.
At 1ml/liter, a 30ml bottle would be enough to make 30 liters of Colloidal Silver.
There is a reason why they call sodium carbonate washing soda. Being highly alkaline, its a good "detergent" or "laundry booster". In the US, the non-anhydrous stuff (mined) is sold under the Arm and Hammer brand as "washing soda".