"hand washed" is a correct phrase and can be used in written English.
Example: The delicate fabric should only be hand washed to avoid damaging it.
Nearby a ranch hand washed down a dusty horse.
We like our crabs steamed, covered in old bay (a local seasoning) and piled high on to brown paper, to await being picked apart by hand, washed down with a cold beer.
Roots of all pure species pots were separated from the soil by hand, washed with tap water until clean, and dried until a constant weight was reached.
The results for ripe, freeze dried cacao beans (shown here for comparison), for field processed lavado cacao beans that were sun dried and for cacao beans that had undergone various amounts for intentional fermentation are shown in Figure 4. Lavado beans are beans that have been removed from pods, hand washed in water (lavar in Spanish means "to wash") to remove the surrounding pulp and sun dried.
They hand washed in a tub of water".
Genomic DNA was extracted from mature leaves using a miniprep protocol [ 74] modified by the addition of a CTAB extraction [ 75]. A. thaliana leaves were harvested, hand washed and then ground to a fine powder in liquid nitrogen.
