Gbark

Hi all,

I thought i would try out the blog section, and describe how i have made my own 4dKH solution.

What you will need.

1. Sodium Bicarbonate
2. Suitable container for at least 1000ml
3. Lab ware 500ml measuring cylinder
4. Demin/RO water
5. 500ml sample jar

Method.

First measure out 1000ml of Demin/RO water using the measuring cylinder (remember to take the reading from the bottom of the meniscus) and transfer to a clean container.

Now weigh out 1.2grams of the sodium bicarbonate, i used a calibrated balance to 4 decimal places, but 2 decimal places will do.

Mix to the 1000ml Demin.

This has given you a 40dKH solution.

Now take the Measuring cylinder and fill up to the 450ml mark with Demin/RO and transfer to a 500ml sample jar, next add 50ml of the 40dKH to the same sample jar.

You now have 500ml of 4dKH solution.