The phrase "a control water" is not correct in written English.
It seems to be a misunderstanding or misphrasing, as "control" typically functions as an adjective or verb, not as a noun in this context.
Example: "We need to establish a control for the water quality tests to ensure accurate results."
Alternatives: "a control sample" or "a reference water".
For inhibition of nodal-related protein function, embryos were injected at the one cell stage with 600 pg Cerberus-short RNA [17] or, as a control, water.
We repeatedly exposed a mixed mob of macropod marsupials to olfactory scents (urine, feces) from a sympatric predator (Canis lupus dingo), along with a control (water).
Half the individuals swabbed with a control (water or sea water for NaCl and HCl; ethanol for benzocaine) on the distal half of one second antenna, and half were swabbed the stimulus.
Three ABHR systems containing 70% alcohol (ethanol, isopropanol, or n-propanol), water, and humectant were used in addition to a control (water and humectant only).
We assessed the efficacy, acceptability, and safety of a topical alkane vapocoolant spray for reducing pain with intravenous cannulation in adults by comparing its effects with a control (water) spray.
As a control, water-only infiltrations were performed in the same way.
Treatments included a negative control (water), a vehicle control (ethanol) due to endosulfan's low solubility in water, and six nominal concentrations of endosulfan (1, 5, 10, 50, 100, and 500 ppb).
Each plate consisted of a serum DNA sample and a negative control (water template) and a positive control (human genomic DNA) in each plate run.
For each primer pair, a negative control (water) and a RNA sample without reverse transcriptase (to determine genomic DNA contamination) were included as controls during cDNA quantification.
‡Two parasite strains (3D7 and W2) were genotyped as a positive control; water was used as a negative control.
A preparation of influenza A H3N2 control strain was used as a positive control, water and blank processed FTA paper discs were used as negative controls.
