What does ppb stand for?

Parts per Billion (AD)

Parts per Billion 10 (IDOE)

Botanical Research Centre (SAUS)

Brazilian Progressive Party - Political party (PSAP)

Paper, Printing, and Binding (ADWA)

Parachute Paraglider Building - NASA (KSC)

Part Per Billion (SAUS)

Parts per Billion

Perliminary Parts Breakdown (SAUS)

Personal Protection Blanket - Police and security equipment

Pete's Plastic Boat Works - NCIC boat manufacturer code (NCIC)

Petro-Canada Products, Inc. - Toronto Stock Exchange symbol - Vancouver Stock Exchange symbol

Philadelphia Bar Association, Philadelphia, PA - Library symbol - Library of Congress (LCLS)

Planning, Programming, Budgeting (SAUS)

Platelet-Poor Blood - Hematology (MAE)

Platoon Patrol Base - Military (VNW)

Pneumococcal Pneumonia and Bacteremia - Medicine (EDAA)

Polar Patrol Balloons (SAUS)

Political Party Broadcast - Television - British

Polybrominated-Biphenyl (AD)

Poly(para-benzamide) - Organic chemistry

Positive Pressure Breathing - Aerospace

Powerplant Bending - Automotive engineering

Power Plant Bulletin (MCD)

Precision Pressure Balance

Preliminary Parts Breakdown (SAUS)

Preparing, Planning and Budegting (SAUS)

Prepatellar Bursitis - Medicine (MELL)

Preprophase Band - Cytology

Presidente Prudente - Brazil - Airport symbol (AD)

Pres Prudente - Brazil - Airport symbol (OAG)

Primary Parts Breakdown (SAUS)

Primary Propulsion Branch - Manned Spacecraft Center

Printing, Paper, and Binding - Publishing (WDMC)

Private Posting Box

Procurement Policy Board - ABA Public Contract Law Section (AAGC)

Production Parts Breakdown (MCD)

Programming, Planning & Budget (ALAC)

Program Performance Baseline (NASA)

Program Planning Budget (NOAA)

Program-Planning-Budgeting

Progressive Reform Party (Brazil) - Political party (PSAP)

PROM - Programmable Read-Only Memory Programmer Board

Provisional Parts Breakdown (SAUS)

Provisioning Parts Breakdown

Purchasing Power Benefit (ADA)

Push-Pull Bearing

Push Pull Button (SAUS)

Pappaband - Hard Cover - German (AD)