Sentence examples for avoiding external contamination from inspiring English sources

Plants (20 plants of 7-day-old for Z. mays; 5 plants of T. latifolia) were placed in sterilized tap water (V = 400 ml) in a container avoiding external contamination.

Prior to the examination day, study subjects were provided with 100 mL polypropylene containers and instructed to collect their urine, avoiding external contamination, immediately after rising in the morning and to take it to the laboratory without delay.

All the qPCR set up was performed in the ancient laboratory in order to avoid external contamination.

All the steps for library preparation were performed in the ancient laboratory in order to avoid external contamination.

About 100 mg to 150 mg of bone powder were used in each extraction, which was carried out in a clean-room environment built for handling ancient DNA to avoid external contamination from modern DNA and PCR products.

Samples were taken from the weave in the seam allowance taking special care to avoid external contamination (Fig.  1).

Similar strict protocols were also implemented in the analytic laboratory to avoid external contamination with the target biomarkers (Ye et al. 2013).

The first possibility to consider is whether their study was the only one that successfully avoided external contamination of samples with BPA.

The usual precautions were taken to avoid external contamination during collection, storage, and processing of samples by checking that all containers were metal-free.

Drillcores were extracted with maximum precautions to avoid external environmental contamination.

We measured all spectra with reference to a white standard (WS-1, Diffuse Reflectance Standard) (reflectivity over 98%) and with reference to a dark spectrum to avoid external light contamination.