1 Silicon. 2  Boron. 3  Germanium. 4  Arsenic. 5  Antimony. 6  Tellurium. 7  Unlike other families of elements such as the noble gases, alkali metals, and halogens, the metalloids form a diagonal line on the periodic table rather than a vertical line. Silicon. 2  Boron. 3  Germanium. 4  Arsenic. 5  Antimony. 6  Tellurium. 7  Unlike other families of elements such as the noble gases, alkali metals, and halogens, the metalloids form a diagonal line on the periodic table rather than a vertical line.
What is HARPC? HARPC stands for âHazard Analysis and Risk-Based Preventive Controls.â It is one of many new provisions of the FDA Food Safety Modernization Act, a sweeping food safety legislation amending the Food, Drug and Cosmetic Act that was enacted in January of 2011.
Phenyl isothiocyanate (PITC) is a reagent used in reversed phase HPLC. PITC is less sensitive than o-phthaldehyde (OPA) and cannot be fully automated. PITC can be used for analysing secondary amines, unlike OPA. It is also known as Edman's reagent and is used in Edman degradation.