Certified Reference Materials Releases for Q3 2021

Stevensville, Michigan, October 12, 2021 – Alpha Resources LLC, the largest manufacturer of aftermarket consumables and reference materials, is pleased to announce the following certified reference materials (CRM) have been released in Q3 of 2021.

Of particular note in Q3, the laboratory team at Alpha Resources certified a new lot of resulfurized carbon steel chip CRM, AR 957.

New Q3 2021 available Organic Reference Materials include:

• AR2021 | Lot 721W | Sucrose RM
• AR1710 | Lot 710621 (4.25%±0.14%) Coal CRM

New Q3 2021 available Inorganic Certified Reference Materials include:

AR 147 | OXYGEN & SULFUR IN COPPER PIN CRM | Lot #521L

% OXYGEN	% SULFUR
MEAN = 0.0003	MEAN = 0.0005
Standard Deviation = ± 0.00007	Standard Deviation = ± 0.0001
Expanded Uncertainty = ± 0.0002	Expanded Uncertainty = ± 0.0003
(k=2, @ 95% confidence) (n=50)	(k=2, @ 95% confidence) (n=54)

 

AR 149 | OXYGEN & SULFUR IN COPPER PIN CRM | Lot #621S

% OXYGEN	% SULFUR
MEAN = 0.0314	MEAN = 0.0006
Standard Deviation = ± 0.0004	Standard Deviation = ± 0.0001
Expanded Uncertainty = ± 0.0009	Expanded Uncertainty = ± 0.0003
(k=2, @ 95% confidence) (n=50)	(k=2, @ 95% confidence) (n=45)

ASTM METHODS: E2575-08, E1019-18*

*Below scope limit of test method

 

AR 641 | TITANIUM O/N/H CRM | Lot #321D

% OXYGEN	% NITROGEN	% HYDROGEN
MEAN = 0.191	MEAN = 0.0319	MEAN = 0.0040
Standard Deviation = ± 0.008	Standard Deviation = ± 0.0011	Standard Deviation = ± 0.0004
Expanded Uncertainty = ± 0.017	Expanded Uncertainty = ± 0.0022	Expanded Uncertainty = ± 0.0009
(k=2, @ 95% confidence) (n=55)	(k=2, @ 95% confidence) (n=48)	(k=2, @ 95% confidence) (n=29)

 

 

AR 870 | STAINLESS STEEL RING CRM | Lot #819A

% OXYGEN	% SULFUR*
MEAN = 0.0188	MEAN = 0.0010
Standard Deviation = ± 0.0005	Standard Deviation = ± 0.0002
Expanded Uncertainty = ± 0.0010	Expanded Uncertainty = ± 0.0004
(k=2, @ 95% confidence) (n=43)	(k=2, @ 95% confidence) (n=34)

*Below test method scope limit ASTM METHODS: E2575-08, E1019-18

 

AR 957 | RESULFURIZED CARBON STEEL CHIP CRM | Lot #819B

% CARBON	% SULFUR	% NITROGEN
MEAN = 0.157	MEAN = 0.096	MEAN = 0.0077
Standard Deviation = ± 0.001	Standard Deviation = ± 0.003	Standard Deviation = ± 0.0003
Expanded Uncertainty = ± 0.003	Expanded Uncertainty = ± 0.006	Expanded Uncertainty = ± 0.0007
(k=2, @ 95% confidence) (n=53)	(k=2, @ 95% confidence) (n=51)	(k=2, @ 95% confidence) (n=30)

 

A complete list of Alpha Resources certified reference materials maybe found online at: https://www.alpharesources.com/current-list-of-standards.php