Blue-White Industries F-400 Series Flowmeters have new calibration options. Air flow calibrations of 0.75-7.5 SCFM/1-10 M3/HR; 0.2-2.0 SCFM/0.4-3.2 M3/HR; 1-12 SCFM/2-20 M3/HR; 2-20 SCFM/4-34 M3/HR; are now offered on units with 3/8″ female NPT and 1/2″ female NPT pipe connections (F-400N Series). Air flow calibrations of 4-45 SCFM/8-80 M3/HR; 5-75 SCFM/10-125 M3/HR; 10-80 SCFM/20-140 M3/HR are now offered on units with 3/4″ female NPT and 1″ female NPT pipe connections (F-410N Series). Additional features include a clear, highly polished machined acrylic meter body; direct reading permanent scale; sturdy adapters with high grade Viton O-ring seals; 316 stainless steel floats and float guide rods. Optional materials are available. Acceptable in direct sunlight applications. Many OEM options, including private labeling, are available.