Ideal for home, salon, or commercial use, fitting standard bottle necks securely. Strong acid and alkali, spray water after use. Do not let strong acid and alkali soak the plastic parts inside the nozzle all the time. Otherwise, the life of the nozzle will not be too long All nozzles are equipped with straws length is about 23cm, with an error of 1-3cm ERGONOMIC TRIGGER – Comfortable trigger design reduces hand fatigue during extended use. Smooth operation for consistent spraying pressure. Regarding acid and alkali resistance, it is possible, but some solvents that can dissolve and corrode plastic parts are not durable. For example, machine head water can directly corrode plastic parts. If used, the residual solvent inside the nozzle should also be cleaned, and the solvent should not be kept soaking in the nozzle. This greatly shortens the service life of the nozzle