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OWM Staff and Technical Experts Directory
Federal Staff | Associates & Interns | Organization Chart
NIST OWM is comprised of more than 30 experts that are weights and measures coordinators, physical scientists and engineers, national and international standards experts, training and administrative professionals, and legal, laboratory and scientific metrologists.
The following a list of staff contact information for any inquiries related to the various program areas listed below. Any general inquiries can be sent to owm [at] nist.gov (owm[at]nist[dot]gov).
Administration | Publications | Training and General Info
Metric (SI) | Laboratory Metrology | International Legal Metrology
Laws and Regulations | Measuring Systems | Weighing Systems
NCWM Committees | NCWM NTEP Sectors
| Type of Information | Contact | Phone | |
|---|---|---|---|
Office of Weights and Measures (OWM) | |||
| Katrice Lippa, Chief | 1-301-975-3116 | katrice.lippa [at] nist.gov (katrice[dot]lippa[at]nist[dot]gov) | |
| General Inquiries | owm [at] nist.gov (owm[at]nist[dot]gov) | ||
OWM Administration | |||
| Office Manager | Nicole Moore | 1-301-975-4004 | barbara.cohn [at] nist.gov (nicole[dot]moore[at]nist[dot]gov) |
| Legal Metrology Standards Coordinator | Isabel Chavez Baucom | 1-301-975-2128 | isabel.chavez.baucom [at] nist.gov (isabel[dot]chavez[dot]baucom[at]nist[dot]gov) |
| Training Coordinator | Yvonne Branden | 1-301-975-3272 | yvonne.branden [at] nist.gov (yvonne[dot]branden[at]nist[dot]gov) |
| OWM Web Administrator | Yvonne Branden | 1-301-975-3272 | yvonne.branden [at] nist.gov (yvonne[dot]branden[at]nist[dot]gov) |
| OWM Contacts System Administrator | Yvonne Branden | 1-301-975-3272 | yvonne.branden [at] nist.gov (yvonne[dot]branden[at]nist[dot]gov) |
| AV Productions Coordinator | Vacant | ||
NIST Publications | |||
| General Inquiries (NIST Handbook series, SP 2200 series, and other technical reports) | Isabel Chavez Baucom | 1-301-975-2128 | isabel.chavez.baucom [at] nist.gov (isabel[dot]chavez[dot]baucom[at]nist[dot]gov) |
| NIST Handbook 44, Specifications, Tolerances and Other Technical Requirements for Weighing and Measuring Devices | Juana Williams | 1-301-975-3989 | juana.williams [at] nist.gov (juana[dot]williams[at]nist[dot]gov) |
| Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) | |
| NIST Handbook 130, Uniform Laws and Regulations in the Areas of Legal Metrology and Fuel Quality | David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) |
| John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) | |
| NIST Handbook 133, Checking the Net Contents of Packaged Goods | John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) |
| David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) | |
| NIST Handbook 105 Series, Specifications & Tolerances for Field Standards | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
| NIST Handbook 143: State Weights and Measures Laboratories Program Handbook | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
| NIST SP 811: Guide for the Use of International System of Units (SI) | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
| NIST SP 330: The International System of Units (SI) | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
Training and General Information | |||
| General Technical Inquiries | owmtrain [at] nist.gov (owm[at]nist[dot]gov) | ||
| Metric System (SI) Training and Education Outreach | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
| Laboratory Metrology | Elizabeth Koncki | 1-301-975-4859 | elizabeth.koncki [at] nist.gov (elizabeth[dot]koncki[at]nist[dot]gov) |
| Laws & Regulations, Price Verification, and Package Labeling | David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) |
| John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) | |
| Calibration, Witnessing for Devices | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Weighing, Measuring, and Devices Training | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Tina Butcher | 1-301-975-2196 | tina.butcher [at] nist.gov (tina[dot]butcher[at]nist[dot]gov) | |
Metric (SI) | |||
| Metric System (SI) Information | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
| Federal Agency Metric Progress Reports | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
| Unit Conversion | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
| U.S. Metrication | Elizabeth Benham | 1-301-975-3690 | elizabeth.benham [at] nist.gov (elizabeth[dot]benham[at]nist[dot]gov) |
Laboratory Metrology | |||
| Laboratory Technical Assistance | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
| Elizabeth Koncki | 1-301-975-4859 | elizabeth.koncki [at] nist.gov (elizabeth[dot]koncki[at]nist[dot]gov) | |
| Calibration Procedures | Elizabeth Koncki | 1-301-975-4859 | elizabeth.koncki [at] nist.gov (elizabeth[dot]koncki[at]nist[dot]gov) |
| Measurement Traceability | Elizabeth Koncki | 1-301-975-4859 | elizabeth.koncki [at] nist.gov (elizabeth[dot]koncki[at]nist[dot]gov) |
| Proficiency Testing | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
| Quality Management Systems | Isabel Chavez Baucom | 1-301-975-2128 | isabel.chavez.baucom [at] nist.gov (isabel[dot]chavez[dot]baucom[at]nist[dot]gov) |
| State Lab Program and Recognition | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
| Measurement Uncertainty | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
International Legal Metrology | |||
| International Legal Metrology (OIML) | Katya Delak | 1-301-975-8107 | ralph.richter [at] nist.gov (katya[dot]delak[at]nist[dot]gov) |
| Ralph Richter | 1-301-975-3997 | ralph.richter [at] nist.gov (ralph[dot]richter[at]nist[dot]gov) | |
| Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) | |
| Michael Nelson | 1-301-975-4100 | katya.delak [at] nist.gov (michael[dot]nelson[at]nist[dot]gov) | |
Laws and Regulations | |||
| e-Commerce | John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]mcguire[at]nist[dot]gov) |
| Packaging and Labeling, including OIML R 79 and R 87 | David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) |
| John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) | |
Measuring Systems | |||
| Electric Vehicle Refueling | Katya Delak | 1-301-975-8107 | ralph.richter [at] nist.gov (katya[dot]delak[at]nist[dot]gov) |
| Michael Nelson | 1-301-975-4100 | juana.williams [at] nist.gov (michael[dot]nelson[at]nist[dot]gov) | |
| Electric Watthour Type Electric Meters | Juana Williams | 1-301-975-3989 | juana.williams [at] nist.gov (juana[dot]williams[at]nist[dot]gov) |
| Cryogenic Measuring Devices | Juana Williams | 1-301-975-3989 | juana.williams [at] nist.gov (juana[dot]williams[at]nist[dot]gov) |
| Hydrogen & Compressed Gases | Juana Williams | 1-301-975-3989 | juana.williams [at] nist.gov (juana[dot]williams[at]nist[dot]gov) |
| Retail Motor Fuel Dispensers (Gas Pumps) | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) | |
| Liquefied Petroleum Gas (LPG) Meters | John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) |
| David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) | |
| Loading-Rack Meters | John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) |
| David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) | |
| Vehicle-Tank Meters | Diane Lee | 1-301-975-4405 | diane.lee [at] nist.gov (diane[dot]lee[at]nist[dot]gov) |
| David Sefcik | 1-301-975-4868 | david.sefcik [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) | |
| Field Reference Meters | Diane Lee | 1-301-975-4405 | diane.lee [at] nist.gov (diane[dot]lee[at]nist[dot]gov) |
| Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) | |
| Grain Moisture, including OIML R 59; Protein Analyzers, including OIML R 146 | Diane Lee | 1-301-975-4405 | diane.lee [at] nist.gov (diane[dot]lee[at]nist[dot]gov) |
| Livestock Carcass Measuring Systems | Diane Lee | 1-301-975-4405 | diane.lee [at] nist.gov (diane[dot]lee[at]nist[dot]gov) |
| Multiple Dimension Measuring Devices (MDMD) | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Software and Digitalization, including OIML D 31 | Katya Delak | 1-301-975-8107 | ralph.richter [at] nist.gov (katya[dot]delak[at]nist[dot]gov) |
| Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) | |
| Taximeters, Transportation Network Measuring Systems, and Odometers, including OIML R 21 | John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) |
Weighing Systems | |||
| High precision and laboratory scales, including OIML R 76 | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Automatic Weighing Systems, including OIML R 51 | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) | |
| Belt-Conveyer Scales, including OIML R 50 | Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) |
| Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) | |
| Hopper Scales, Auto Bulk Weighing, including OIML R 107 | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Weigh-In-Motion (WIM) Weighing, including OIML R 134 | Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) |
| Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) | |
| Non-Automatic Weighing Instruments (NAWIs), including OIML R 76 | Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) |
| Railway Track Scales, including OIML R 106 | Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) |
| Balance and Scale Uncertainty | Micheal Hicks | 1-301-975-4615 | micheal.hicks [at] nist.gov (micheal[dot]hicks[at]nist[dot]gov) |
National Conference on Weights and Measures (NCWM) Committees | |||
| Executive Secretary/Board of Directors (BOD) | Katrice Lippa | 1-301-975-3116 | katrice.lippa [at] nist.gov (katrice[dot]lippa[at]nist[dot]gov) |
| Specifications & Tolerances (S&T) Committee | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| Juana Williams | 1-301-975-3989 | juana.williams [at] nist.gov (juana[dot]williams[at]nist[dot]gov) | |
| Laws & Regulations (L&R) Committee | John McGuire | 1-202-981-1750 | john.t.mcguire [at] nist.gov (john[dot]t[dot]mcguire[at]nist[dot]gov) |
| David Sefcik | 1-301-975-4868 | lisa.warfield [at] nist.gov (david[dot]sefcik[at]nist[dot]gov) | |
| Professional Development Committee (PDC) | Vacant | ||
NCWM National Type Evaluation Program (NTEP) Sectors | |||
| NTEP Software Sector | Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) |
| NTEP Grain Analyzers Sector | Diane Lee | 1-301-975-4405 | diane.lee [at] nist.gov (diane[dot]lee[at]nist[dot]gov) |
| NTEP Measuring Sector | Diane Lee | 1-301-975-4405 | diane.lee [at] nist.gov (diane[dot]lee[at]nist[dot]gov) |
| NTEP Belt Conveyer/Weighing Sector | Jan Konijnenburg | 1-301-975-4002 | jan.konijnenburg [at] nist.gov (jan[dot]konijnenburg[at]nist[dot]gov) |
| NTEP Multiple Weighing Dimension Measuring Device | Loren Minnich | 1-202-430-0435 | loren.minnich [at] nist.gov (loren[dot]minnich[at]nist[dot]gov) |
| NTEP EVSE Workgroup | Juana Williams | 1-301-975-3989 | juana.williams [at] nist.gov (juana[dot]williams[at]nist[dot]gov) |
Created March 10, 2023, Updated March 21, 2025