NTEP 2000 Legal-for-Trade Carat Scales

Home Up NTEP 2000 Carat Scales NTEP 2004 Carat Scales

 

This is a compendium of NTEP approved carat scales as of November 8, 2000, including their NTEP Certificate references (See http://ntep.nist.gov/ntep/navigation.htm)

 

See 2004 Updated Version Here!

 

Summary:

 

The following four are the only NTEP-approved carat scales that are certified to .01 carat accuracy with active certificates:

 

1. A&D Engineering HR-60 and HR-60GD (300 x .01 ct)

2. Mettler-Toledo CB203/A (210 x .01 ct, displays but not certified to .001ct)

3. Mettler-Toledo CB603/A (610 x .01 ct, displays but not certified to .001ct)

4. Mettler-Toledo CB1503DR/A (1600 x .01 ct, displays but not certified to .001ct)

 

 

Full Listing:

 

A&D Engineering EK and EW Series.  CERTIFICATE ACTIVE

                This is a large series.  None are certified to .01 Carats.

                See http://ntep.nist.gov/NTEP_PDFS/95-097A1.PDF

 

A&D Engineering HR-60 and HR-60GD (HR-60G is grams only).  CERTIFICATE ACTIVE

                These are both carat scales 300 x .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/97-084.PDF

 

A&D Engineering HF-200, HF-200GD (HF-200G is grams only).  CERTIFICATE ACTIVE

                These are both carat scales, 210 x .01g. None are certified to .01 Carats.

                See http://ntep.nist.gov/NTEP_PDFS/97-127.PDF

 

Denver Instruments AL-5K/44.  CERTIFICATE NO LONGER ACTIVE

                This is not a carat scale.  5000 x 0.1g only

                See http://ntep.nist.gov/NTEP_PDFS/92-194.PDF

 

Mettler-Toledo AE1000C/49.  CERTIFICATE NO LONGER ACTIVE

                AE1000C/49 is a carat scale.  1025 x .01 ct, displays but not certified to .001ct

                See http://ntep.nist.gov/NTEP_PDFS/91-026.PDF

 

Mettler-Toledo PJxxxxG and CJxxxx.  CERTIFICATE NO LONGER ACTIVE

                This is a large series.  Only one, CJ150/49, is certified in Carats.

                CJ150/49 is a carat scale.  150 x .01 ct, displays but not certified to .001ct

                See http://ntep.nist.gov/NTEP_PDFS/87-004A5.PDF

 

Mettler-Toledo PM/49 and CM/49.  CERTIFICATE NO LONGER ACTIVE

                This is a large series.  Only two are certified to .01 Carats.

                CM1200/49 is a carat scale.  1100 x .01 ct, displays but not certified to .001ct

                CM200/49 is a carat scale.  200 x .01 ct, displays but not certified to .001ct

                See http://ntep.nist.gov/NTEP_PDFS/87-004A5.PDF

 

Mettler-Toledo PJ4000 Series.  CERTIFICATE NO LONGER ACTIVE

                There is no PJ4000P.

PJ4000GP and PJ4000/49 are not certified in Carats.

                See http://ntep.nist.gov/NTEP_PDFS/87-004A5.PDF

 

Mettler-Toledo BD Series.  CERTIFICATE ACTIVE

                None are certified to .01 Carats

                See http://ntep.nist.gov/NTEP_PDFS/92-155.PDF

 

Mettler-Toledo CB, PB Series.  CERTIFICATE ACTIVE

                This is a large series.  Only three are certified in Carats.

                CB203/A is a carat scale.  210 x .01 ct, displays but not certified to .001ct

                CB603/A is a carat scale.  610 x .01 ct, displays but not certified to .001ct

                CB1503DR/A is a carat scale.  1600 x .01 ct, displays but not certified to .001ct

                See http://ntep.nist.gov/NTEP_PDFS/94-022.PDF

 

Ohaus CT600 Series.  CERTIFICATE ACTIVE

                CT600L is the only carat scale in this series, but it is not certified to .01 ct.

                See http://ntep.nist.gov/NTEP_PDFS/89-084A1.PDF

 

Ohaus Exxxx2 and Vxxxx2.  CERTIFICATE ACTIVE

                This is a large series.  None are certified to .01 ct.

                See http://ntep.nist.gov/NTEP_PDFS/98-053A2.PDF

 

Ohaus GT and GJ Series.  CERTIFICATE NO LONGER ACTIVE (See GT Series)

                There are 3 scales in this series.  None are certified to .01 ct.

                GJ4400-L is certified only to an accuracy of .05 ct

                GJ4000-L is certified only to an accuracy of .5 ct

                GT4000-L is not a carat scale

                See http://ntep.nist.gov/NTEP_PDFS/88-227.PDF

 

Ohaus GT Grain Series.  CERTIFICATE ACTIVE

                These are not Carat scales.

                See http://ntep.nist.gov/NTEP_PDFS/95-090.PDF

 

Ohaus GT Series.  CERTIFICATE NO LONGER ACTIVE

                This is a large series.  None are certified to .01 ct.

                GT410E, GT410DE, GT400E are certified to 2020 x .05 ct.

                GT310E is certified to 1550 x .05 ct.

                GT210E is certified to 1010 x .05 ct.

                See http://ntep.nist.gov/NTEP_PDFS/94-079.PDF

 

Ohaus Navigator Series.  CERTIFICATE ACTIVE

                There are 4 scales in this series.  None certified to .01 ct.

                N06112 is the finest accuracy, at 3050 x .5 ct.

                See http://ntep.nist.gov/NTEP_PDFS/00-017.PDF

 

Sartorius BP and GP Series.  CERTIFICATE ACTIVE

                This is a large series.  None are certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/98-061.PDF

 

Sartorius E, I Series.  CERTIFICATE NO LONGER ACTIVE

                This is a large series.  None are certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/88-121.PDF

 

Sartorius U, X Series.  CERTIFICATE NO LONGER ACTIVE

                This is a large series.  None are certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/88-120.PDF

 

Sartorius X1493-X.  CERTIFICATE NO LONGER ACTIVE

                This is a Ticket-Printing scale, not certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/88-187.PDF

 

Sartorius H, G Series.  CERTIFICATE NO LONGER ACTIVE

                G150D-*U2 is the only carat scale in these two series. 

                152 x .01 ct, displays but not certified to .001ct

                See http://ntep.nist.gov/NTEP_PDFS/88-123.PDF

 

Sartorius L Series.  CERTIFICATE NO LONGER ACTIVE

                This is a large series.  None are certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/88-119.PDF

 

Sartorius P Series.  CERTIFICATE NO LONGER ACTIVE

                There are 2 scales in this series.  Neither is certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/88-122.PDF

 

Scientech 5550.  CERTIFICATE NO LONGER ACTIVE

                This scale is not certified to .01 ct

                See http://ntep.nist.gov/NTEP_PDFS/88-027.PDF

 

Troemner 800A.  CERTIFICATE ACTIVE

                This scale is limited to use for weighing pharmaceuticals.

                It must be marked "For Prescription Weighing Only"

                This scale is not certified to .01 ct.

                See http://ntep.nist.gov/NTEP_PDFS/90-056.PDF

 

Vertex Industries DRX-3.  CERTIFICATE ACTIVE

                This scale is limited to use for weighing pharmaceuticals.

                It must be marked "For Prescription Weighing Only"

                This scale is not certified to .01 ct.

                See http://ntep.nist.gov/NTEP_PDFS/87-019.PDF

 

 

Revision Notes:

10/21/00 Original Compilation

11/08/00 Added A&D Engineering HF-200, HF-200GD (Not .01c)

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