OMA Protocol Review: OMAMAN-56 Sulfites in Shrimp

Full range

Full range residual plot

400

5

y = 0.9578x + 0.1473 R² = 0.99778

200

0

0 50 100 150 200 250 300

-5

0

Residual

0

100

200

300

400

-10

Sodium Sulfite Concentration (ppm)

Biofish Result (ppm)

Sodium Sulfite Concentration (ppm)

Figure 2. Linearity and residual plots for the full range of standards examined.

Claimed Range 30-150

Claimed range 30-150 ppm residual plot

y = 1.0082x - 2.8026 R² = 0.99792

100 150 200

-1 -0.5 0 0.5

0 50

0

50

100

150

200

Residual

0

50

100

150

200

Biofish Result (ppm)

Sodium Sulfite Concentration (ppm)

Sodium Sulfite Concentration (ppm)

Figure 3. Linearity and residual plots for the claimed range of calibration (30-150 ppm)

Full Range

Full range residual plot

y = 0.8971x + 3.5732 R² = 0.99733

0 200 400 600

20

10

0

Residual

0

200

400

600

800

0

200

400

600

800

-10

Sodium Sulfite Concentration (ppm)

Biofish Result (ppm)

Sodium Sulfite Concentration (ppm)

Figure 4. Linearity and residual plots for the full

range of standards examined.

13