Sentence examples for metal grade from inspiring English sources

All chemicals were trace metal grade (Suprapur).

All reagents used were ACS reagent or trace metal grade.

Nitric acid was of trace metal grade and was purchased from Thermo-Fisher, USA.

Batch reactors were typically titrated first to an acidic initial pH (~2 4.5) using trace metal grade HNO3.

Potassium persulfate, copper sulfate, copper acetate, nitric acid (trace metal grade) were from Fisher Scientific (Pennsylvania, PA, USA).

The "whole" sample was acidified drop-wise with 12 M HCl (trace metal grade, Fisher Scientific) to pH < 2.

Trace-metal grade acids were used for pH adjustments and acid-cleaning of containers.

Sub-samples were acidified using concentrated trace-metal grade nitric acid (1.0% (v/v) final concentration) for cation analyses.

All hydrochloric acid solutions were prepared from dilution of trace-metal grade concentrated acid (Thermo Fisher Scientific, Waltham, MA).

Trace-metal grade nitric acid (HNO3) was used for fusion dissolution and as the background solvent for ICP-MS analysis (BDH ARISTAR® Plus, VWR; assay 69 wt%; Lot # 1113050).

In order to diminish the chloride concentration prior to determining arsenic concentrations by ICPMS, samples were repeatedly dissolved in 1 to 2 ml of trace-metal grade concentrated nitric acid and evaporated to dryness.