Different water cement ratios w/c as well as the addition of previously washed UFSs were also considered.
Approximately 10 g of mixed lubricating oil sample was taken in a previously washed and dried silica crucible.
However, if previously washed UFS is employed, the accelerating effect at shorter curing time is eliminated and the reduction in mechanical performance at longer curing time partially recovered.
Stock solutions of 100 mg/L of each substance were prepared in methanol and stored at 4°C in amber glass bottles that were previously washed with methanol.
All samples were kept in two liters polyethylene bottles, which have been previously washed with 1 1 HCl and distillated water.
Algal lawns were prepared by filtering the previously washed suspensions using 0.45-μm nitrocellulose membrane filters (Advantec MFS, Inc., Tokyo, Japan) until complete clogging of the membranes.
Plastic buckets that have been previously washed and leached with 10% HNO3 and 1 1 HCl for 48 h were used to collect rainwater samples in an open place with a stand of about twenty feet above the ground.
One ml of the ultrafiltrate prepared from the cell-free extract of induced C. guilliermondii cells was applied to a Bio-Gel P-2 column (1.0 cm × 50 cm) previously washed with distilled water and eluted with distilled water.
Seeds of Indian mustard (B. juncea cv. Vittasso), red fescue (F. rubra) and alfalfa (M. sativa cv. Robot), previously washed with 1% H2O2 for 15 min and subsequently rinsed with deionized water, were placed in the dark in Petri dishes containing germinating paper and distilled water.
All samples were collected onsite at the sewage treatment plant (STP) of the city of Repentigny (30 km North-East of Montreal, Qc, Canada) in amber glass bottles previously washed with methanol during an ozonation pilot-study performed in June 2011.
If previously washed in anything but Woolite or, quelle horreur, subjected to a spin cycle, you're out of luck.
