Optimizing Liquor Ratio for Cost-Effective Detergent Use in Laundry Facilities

When the amount of chemical materials is precisely controlled, the choice of bath ratio directly determines the concentration distribution of detergent and the friction intensity of clothes. From the low bath ratio impact of drum washing to the high bath ratio immersion of manual washing, the ratio of liquid to clothes is the final trade-off between cleaning rate and energy consumption.

​Definition and industry standards of bath ratio​

Formula: Bath ratio = clothing weight (kg): total liquid amount (kg).

Reference range:

Liquor ratio selection

Processing method:

The drum machine has a low bath ratio (1:4) → high mechanical force and water saving, but the chemical material needs to be pre-dissolved to prevent agglomeration;

Manual high bath ratio (1:13) → Reduce fabric friction, suitable for silk/wool.

Chemical Type:

Oxidant/reducing agent (such as color bleaching powder) → bath ratio ≥ 1:10, to prevent color change;

Enzyme preparation → bath ratio ≤1:6, increase reaction concentration.

Concentration and Temperature:

High concentration chemical materials (such as degreasing agent) → upper limit of bath ratio (such as 1:15 dilution);

Low temperature washing (15°C) → Reduce the bath ratio by 10% to compensate for activity.

The cost of an uncontrolled liquor ratio:

​The bath ratio is too low: uneven distribution of chemical materials → partial residue (white shirt turns gray);

​Too high bath ratio: Water and electricity costs soar → Single wash cost increases by 30%.

The regulation of bath ratio allows the chemical materials and clothing to achieve a dynamic balance, but if it involves the coordinated ratio of multiple liquid raw materials, a more sophisticated "volume ratio" operation is required - this ultimate material control technology will be revealed in the next article.