← Product Code [JIT](/submissions/CH/subpart-b%E2%80%94clinical-chemistry-test-systems/JIT) · K120591

# DIAMOND TOKYO BOEKI ISE MODULE CALIBRATOR 1,2,1-2 (K120591)

_Diamond Diagnostics, Inc. · JIT · Apr 17, 2012 · Clinical Chemistry · SESE_

**Canonical URL:** https://fda.innolitics.com/submissions/CH/subpart-b%E2%80%94clinical-chemistry-test-systems/JIT/K120591

## Device Facts

- **Applicant:** Diamond Diagnostics, Inc.
- **Product Code:** [JIT](/submissions/CH/subpart-b%E2%80%94clinical-chemistry-test-systems/JIT.md)
- **Decision Date:** Apr 17, 2012
- **Decision:** SESE
- **Submission Type:** Traditional
- **Regulation:** 21 CFR 862.1150
- **Device Class:** Class 2
- **Review Panel:** Clinical Chemistry

## Indications for Use

Diamond calibrator for Tokyo Boeki ISE Module are intended for in vitro diagnostics use to provide calibration points for the Na+, K+, and Cl- electrodes on the Tokyo Boeki Prestige 24i, Biolis 24i, MGC 240 and Sirrus instruments in both Human Serum and Human Urine modes.

## Device Story

Diamond Tokyo Boeki Calibrators are buffered electrolyte solutions (Na+, K+, Cl-) used as direct replacements for predicate Tokyo Boeki ISE Module calibrators. Device provides calibration points for ion-selective electrodes on specific clinical chemistry analyzers (e.g., Prestige 24i, Biolis 24i). Solutions contain no human or biological materials. Used in clinical laboratory settings by trained personnel to calibrate instruments; ensures accuracy of electrolyte measurements in patient serum and urine samples. Benefits patient by maintaining analytical accuracy of diagnostic testing.

## Clinical Evidence

No clinical data. Bench testing only. Stability testing (accelerated stress) supports a 2-year shelf life at 18-25°C. Open-vial stability confirmed for 60 days. Traceability established using NIST 919a and 918a standards via IL 943 Flame Photometer and Corning 925/SAT-500 titrimetric analyzers.

## Technological Characteristics

Buffered solution of electrolytes (Na+, K+, Cl-) and preservatives in deionized water (resistivity ≥10 mega-ohms). No human/animal materials. Storage: 18-25°C. Shelf life: 24 months. Connectivity: None (reagent/calibrator).

## Regulatory Identification

A calibrator is a device intended for medical purposes for use in a test system to establish points of reference that are used in the determination of values in the measurement of substances in human specimens. (See also § 862.2 in this part.)

## Special Controls

*Classification.* Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9.

## Predicate Devices

- Tokyo Boeki ISE Module Calibrators (k040958)

## Submission Summary (Full Text)

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# 510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION DECISION SUMMARY DEVICE ONLY TEMPLATE

A. 510(k) Number:
k120591

B. Purpose for Submission:
New Device

C. Measurand:
Calibrator materials for serum and urine Potassium, Chloride, Sodium

D. Type of Test:
Calibrator materials

E. Applicant:
Diamond Diagnostics Inc

F. Proprietary and Established Names:
Diamond Calibrators for Tokyo Boeki ISE Module

G. Regulatory Information:

1. Regulation section:
|  Product Code | Classification | Regulation Section | Panel  |
| --- | --- | --- | --- |
|  JIT | Class II | 21 CFR 862.1150 | Calibrator  |

2. Classification:
Class II

3. Product Code:
JIT

4. Panel:
75 Chemistry

H. Intended Use:

1. Intended use(s):
Refer to Indications for use below.

2. Indication(s) for use:
Diamond calibrator for Tokyo Boeki ISE Module are intended for in vitro diagnostics use to provide calibration points for the Na+, K+, and Cl- electrodes on the Tokyo Boeki Prestige 24i, Biolis 24i, MGC 240 and Sirrus instruments in both Human Serum and Human Urine modes.

3. Special condition for use statement(s):
Prescription use

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4. Special instrument Requirements:
Tokyo Boeki Prestige 24i, Biolis 24i, MGC 240 and Sirrus instruments

I. Device Description:

Diamond Calibrators consist of a buffered solution of electrolytes and preservative. The matrix of Diamond Calibrators is deionized water added with chemicals and a resistivity of at least 10 mega-ohms. No human or animal products are used in the calibrators.

Each calibrator is comprised of the following concentrations of analytes,

|  PN | ISE Module Calibrator | Na | K | Cl  |
| --- | --- | --- | --- | --- |
|   |   | mmol/L | mmol/L | mmol/L  |
|  TB-202704770 | Calibrator 1 | 140 ± 2.0 | 4.00 ± 0.05 | 100 ± 2  |
|  TB-202704780 | Calibrator 2 | 160 ± 2.0 | 6.0 ± 0.05 | 120 ± 2  |
|  PN | ISE Module Calibrator | Na | K | Cl  |
| --- | --- | --- | --- | --- |
|   |   | mmol/L | mmol/L | mmol/L  |
|  TB-20270480AD | Urine Calibrator 1 | 10 ± 0.5 | 1.50 ± 0.03 | 12 ± 0.5  |
|  TB-2027048080 | Urine Calibrator 2 | 60 ± 1.0 | 25.0 ± 1.0 | 85 ± 2  |

J. Substantial Equivalence Information:

1. Predicate device name(s):
Tokyo Boeki ISE Module Calibrators
2. Predicate K number(s):
k040958
3. Comparison with predicate:

Calibrator values are the same for the new device and predicate (Table 1).

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|  Characteristics | Diamond Calibrators for Tokyo Boeki ISE Module Calibrators (New Device) | Tokyo Boeki ISE Module Calibrators (Predicate Device, K040958  |
| --- | --- | --- |
|  Similarities  |   |   |
|  Intended Use | This device are intended for in-vitro diagnostics use to provide calibration points for sodium, potassium, and chloride electrodes on the Tokyo Boeki Prestige 24i, Biolis 24i, MGC 240, Sapphire 400, Sirrus, TMS-1024, TRX-7010, and Labmax 240 instruments in both human serum and human urine modes. | Same as new device.  |
|  Matrix | Buffered solution of salts & preservatives contains NO human or animal materials | Same as new device.  |
|  Analytes | Potassium, Chloride, Sodium | Same as new device.  |
|  Storage | 18 °C to 25 °C | Same as new device.  |
|  Shelf life of product | 24 months | Same as new device.  |
|  Differences  |   |   |
| --- | --- | --- |
|  510 (K) | K120591 | K040958  |
|  PN | TB-20270477D, TB-20270478D, TB-20270480D | 20-27-0477, 20-27-0478, 20-27-0480  |

K. Standard/Guidance Document Referenced (if applicable):
None were referenced

L. Test Principle:
Not applicable

M. Performance Characteristics (if/when applicable):
1. Analytical performance:
a. Precision/Reproducibility:
Not applicable
b. Linearity/assay reportable range:
Not applicable
c. Traceability (controls, calibrators, or method):
a). Traceability
Six replicates of each sample are tested analytically for the electrolytes using reference methods. Flame Photometry is used for the Na+ and K+. Titration method is used for the Cl⁻. The IL 943 Flame Photometer is used for testing the Na+ and K+, and the Corning 925 instrument is used for testing the Cl⁻.

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The exception is the Urine Calibrator 2, where the chloride is tested on the SAT-500 Analyzer due to a low chloride concentration, 12mmol/L. Lot to lot variation is determined by analytically testing new lot vs. previous lot and predicate device, then normalized to either an aqueous standard made with corresponding analyte NIST (National Institute of Standards and Technology) material or a known Calibrator based on reference methods (shown below).

|  Analyte | Standard Used for Determination of Analyte Value | Instrument Used  |
| --- | --- | --- |
|  Na, K, Cl | NIST 919a, 918a
NIST 919a | IL 943 (Flame Photometry)
Corning 925, SAT-500 Salt Analyzer
(Titrimetric)  |

b.) Value Assignment (Controls, Calibrators, or Methods)
Assigned values for Na⁺, K⁺, Cl⁻ were obtained from six replicates in Tokyo Beoki ISE module using NIST standard materials.

c.) Stability
Stability was determined using an accelerated (high temperature) stress test. The results from the accelerated stress tests support 2 years shelf life when stored at 18-25°C. Real time studies are being performed. Storage temperature of the devices is 18-25°C. Results of stability tests for the open and closed vial are provided. Opened vials showed Na⁺, K⁺, and Cl⁻ remained within specification after 60 days.

d. Detection limit:
Not applicable.

e. Analytical specificity:
Not applicable.

f. Assay cut-off:
Not applicable.

2. Comparison studies:
a. Method comparison with predicate device:
Not applicable.
b. Matrix comparison:
Not applicable.

3. Clinical studies:
a. Clinical sensitivity:
Not applicable.

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b. Clinical specificity:
Not applicable.

c. Other clinical supportive data (when a and b are not applicable):
Not available.

4. Clinical cut-off:
Not applicable.

5. Expected values/Reference range:
Not applicable.

N. Proposed Labeling:
The labeling is sufficient and it satisfies the requirements of 21 CFR Part 809.10

O. Conclusion:
The submitted information in this premarket notification is complete and supports substantial equivalence decision.

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**Source:** [https://fda.innolitics.com/submissions/CH/subpart-b%E2%80%94clinical-chemistry-test-systems/JIT/K120591](https://fda.innolitics.com/submissions/CH/subpart-b%E2%80%94clinical-chemistry-test-systems/JIT/K120591)

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