Yesterday the scarves were made, today they will be dyed a base color. They will be dyed with Lanaset dyes, a deep rich purple--purple passion. Here is our formula and records for that color:

You can see our color swatch, 4 layers of china silk, right under the formula in the sheet protector on the left. There is also a jacquard hanky and a continuity sheet with a small swatch from every dye lot of this color. I'm a strong believer in keeping records, it is the only way I get smarter with time.
Next all 50 scarves we are going to dye have been gather together in this box. We need to weigh them to determine their mass and then calculate the amount of dye we will use. We need the dry weight to be meaningful. The box is placed on the digital balance and it is tared (that means it reads zero even though there is something on it) and then the silk is added to the box and the weight of the silk, 1462g, appears on the screen.

This is referred to as the weigh of fiber, WOF, or the weight of goods, WOG. This number is then used to calculate the correct amount of dye to get the same color.

Here you can see that the total amount of dye is 65.79g,and that it is divided up among 3 manufactured dye colors, Polar Red ( not a Lanaset dye, but compatible and adds a bright red component), violet and black. The Lanaset violet is quite bright and with the Polar Red, also bright , it is a dark and bright red purple.
These are the dye powders we will use and the amounts needed:

And we will disolve them in this water:

This is a favorite tool-- a hot plate/stirrer. The white ceramic top heats and is controlled by one dial . Underneath the top plate is a rotating magnet, the speed of rotation is controlled by the other dial. If you drop a plastic coated magnet in the water you can make the water rotate too. The heat and stirring help the dye powders to dissolve, an essential first step in dyeing.
So I weighed the Polar Red dye and added it to the beaker with the hot swirling water. Now I weigh the violet dye.

I love digital balances; the number of grams I want, 26.32g, is the number I see! Then I add the violet to the beaker:

And make sure the all of the dyes is transferred to the beaker with a wash bottle. Last the black dye is added and then all the dye is left stirring on the hot plate until used. This is done first so the dyes have ample time to dissolve.
Today we will use the small dye machine that we have :

We fill it with 100L of water and all the additives for Lanaset then adjust the pH to 5 ( a compromise, 4.5 is better for the Lanasets but Polar Red doesn't like it that low). The the silk is added and the machine runs for 10 min. This gives the additives time to saturate the silk.

The grey spot is a net laundry bag that holds the small swatches that might otherwise escape the basket. It has turned grey with use. Then we add the dissolved dye.

We pour the dye into the bath not onto the silk. The dye run begins now, the machine heats the bath up to 90°C and holds it at 90°C for 30 min. Then a cool down, back down to 40°C. All the time the silk is being moved so that the dyeing is level.

The silk is the spun to remove the water and hung to dry.

My house is identified as the one with the colors out front.