42 Information technology consulting services, namely, technical and professional advisory services related to design, engineering, maintenance, certification in the nature of testing, analysis and evaluation of the services of others to determine conformity with certification standards, calibration, supervision, inspection, verification, accreditation in the nature of testing, analysis and evaluation of the services of others to determine conformity with accreditation standards and integration of information systems, and implementation of languages, applications and uncertainty graphs, all of the foregoing related to flow, volume, temperature, pressure and quality measurement systems of all types of hydrocarbons and liquids