VALENCE
The numerical combining power of a given atom or radical with other atom. For example, the valence of nickel is +2.
It can be combined with one sulfate ion (valence,-2). Some metals have multiple valences, such as copper, which
can have a valence of +l or +2.

VALID REQUIREMENTS
Valid Requirements are standards of quality work agreed upon by customers
and suppliers.  Valid requirements must be:  CURRENT  REALISTIC  MEASURABLE
MEET CUSTOMER NEEDS AND REASONABLE EXPECTATIONS  and
MEET CORPORATE RESPONSIBILITIES.

VAR
VACUUM ARC REMELTING

VARIABLES (1)
Any data gotten by measurement  using a device with a continuos
scale between plus/minus infinity;  data will  form a bell-shaped curve.

VARIABLES (2)
( As in  'key process VARIABLES' );  the prime factors in a production
system which impart a given product   characteristic;
( like CURRENT  TIME  AREA  and BATH  which control plating quality).

VARIABLES CONTROLS CHART
There are two types of VARIABLES CONTROLS CHART:
_  X  R CHART and X  MOVING RANGE CHART.

VHAP
VOLATILE HAZARDOUS AIR POLLUTANTS

VHI
VAPOR HAZARD INDEX

VHT
VERY HIGH TEMPERATURE

VISITT
VENDOR INFORMATION SYSTEM FOR INNOVATIVE  TREATMENT TECHNOLOGIES

VOC
VOICE OF THE CUSTOMER; VOLATILE ORGANIC  COMPOUNDS

VOLUMETRIC
Wetlab' test by which the chemical CONCENTRATION can be measured by
adding standard solutions    reagents  or indicators  to a known volume of sample BATH;
an amount added translates directly to CONCENTRATION.

VOST
VOLATILE ORGANIC SAMPLING TRAIN

VP
VAPOR PRESSURE

VSQG
VERY SMALL QUANTITY GENERATORS