The Nima Peanut Sensor Full User Manual

Disclaimer

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Warning

Nima test results are only representative of the sample tested and is not a guarantee of the entire dish. Use of this product should not replace education, medical advice, compliance with food labeling and adherence to avoidance strategies. Failure to use this product in accordance with the instructions could result in serious injury or death. Read full directions in this manual before use.

Product Limitations

Nima is another tool to help you understand if there is peanut in your food. Nima has been developed and validated to test food items only (both solids & liquids). Nima has not been validated on medication, cosmetics or non food items. Nima only tests the sample that is in the device and therefore, Nima does not guarantee that your entire item or dish is peanut-free. Please use your best judgement when choosing what to consume.

How does Nima work?

With Nima, we have taken a complex laboratory style test and shrunk it into a simple, portable device. Closing the capsule prepares the food sample for mixing and testing. Our antibody chemistry then detects if there is peanut protein present in the sample. Finally, our sensor reads the result. All of this allows you to feel more confident in your decision-making about what to eat. Nima should always be used in conjunction with clear advocacy for peanut free options and your better judgement. Your understanding of what the Nima Peanut Sensor can and cannot test (see below) and how to sample (see below) is critical for accurate and reliable results.

Nima is intended to give you an additional data point and level of comfort when eating but is not a guarantee as we can only provide a result for the sample being tested. It is still your responsibility to do everything you can to let waitstaff know your needs, to ask friends to prepare peanut free meals, to purchase items that are clearly peanut free, and to advocate for yourself. Whether or not you wish to eat something will be up to you.

We encourage everyone to download the Nima app for iOS or Android and pair your Nima so you can access your test history, receive firmware updates for improved device performance, and share your results with the growing community!

Peanut Science

Nima’s antibody based chemistry was designed to detect traces of peanut in your food. Nima is designed to test for 10 ppm and above (equal to 0.001g peanut in a standard serving size of 100g).

The Nima chemistry team developed a pair of antibodies specifically for the detection of peanut. There are existing peanut antibodies on the market, but none of them were sufficient to meet the speed, sensitivity and specificity requirements that we needed for Nima. The Nima 20B10 and 16B1 antibodies bind to a peanut protein called Arah3. Although not the most antigenic, it is most abundant in all types of peanut and is more stable under processing conditions (such as heat due to roasting).

Testing Limitations

Use Caution

Peanut Oil

You can use the Nima Peanut Sensor to test peanut oil or dishes that may be cooked in peanut oil. Peanut oil is refined enough that the peanut protein is broken down enough that it should not affect people with peanut allergies but if there is peanut remaining, Nima may detect it.

Chocolate

You can test chocolate with the Nima Peanut Sensor but the consistency will impact the likelihood of an accurate result. Solid chocolate (block chocolate bars, uncooked chocolate chips or any chunky chocolate that is unmelted) should NOT be tested with Nima in that form. Melted chocolate, chocolate mouse, chocolate powder, etc. are all acceptable to test with Nima.

This Use Caution list may change as we continue to develop Nima and make updates to the system. Please register your Nima so we can quickly and easily notify you of any updates.

Do Not Test

Based on internal lab testing, the Nima Peanut Sensor may incorrectly show a ‘Peanut Found’ message when testing foods containing the following items:

  • Sesame
  • Tamarind
  • Tomato Paste / Sauce
  • Eggplant
  • Cayenne
  • Paprika
  • NOS Energy Drink

Anytime you get a Peanut Found result, we always recommend that you DO NOT consume the dish.

Based on internal lab testing, the Nima Peanut Sensor may incorrectly show a ‘Smile’ message when testing foods containing the following items:

  • Solid Chocolate (bars, uncooked chips, etc.)
    • If the chocolate is manipulated into a different form (softened, melted) and ground prior to testing, Nima can test it.
  • Alcohol

This Do Not Test list may change as we continue to develop Nima and make updates to the system. Please register your Nima so we can always reach out to you with any updates.

How to

Turn on/off

On/off

Store capsules

Capsule Storage

Sample

Since Nima cannot guarantee your entire plate is free from a particular allergen, it’s important to try and get a representative sample to test. In order to try and get a representative sample, it is recommended to test multiple points from across your plate – being careful not to overfill the capsule.

Testing multiple points in a single test capsule or using multiple capsules if needed will help in identifying contamination.

If an item is ordered with a peanut substitute, it is recommended to test the item that was replaced or the most likely point where contact may have occurred (grill marks, cut marks, etc.)

Prepare a sample

Most liquid and solid food samples can be put in a capsule as-is. However, to ensure an accurate test, some manipulation might be helpful for special types of food.

Thick / Dense Foods

Thick samples such as nut butters and fudge should be tested with 1:1 dilution of water to prevent clogging and slow flow. If thick samples are not manipulated, they may yield a false negative.

Dry / Powdery Foods

Spices and flours should be tested at a lower weight (less than ⅛ teaspoon) and with 1:1 dilution with water.

Brightly Colored Foods

Bright foods can interfere with the sensor’s ability to read the result. These foods should also be mixed with water to dilute the coloring.

In addition to sample manipulation, ensure your sample is the appropriate size. That size is approximately .3g or approximately the size of a pea. Light or fluffy foods (such as puffed cereal) samples should be sizeable enough to help ensure the weight is appropriate for testing.

Run a test

Run a test

See a recent test

Last Test

Interpret the results

Smile

Smile

No peanut detected in the sample tested. Nima is optimized to detect 10 ppm or above of peanut with 99% sensitivity. A smile result indicates less than 10 ppm peanut protein in the sample.

Nima’s peanut validation data including sensitivity and accuracy.

Peanut Found

Nima found peanut in the sample tested. Nima is optimized to detect 10 ppm or above of peanut with 99% sensitivity. In some food matrices, Nima will also detect lower levels of peanut.

No Test Result

Nima was unable to give you a conclusive result. Nima may have had difficulty providing a result because of the sample size, food type, chemistry or a mechanical issue. Click here to see tips on how to ensure a successful test.

capsule-error_small

Capsule Error

The Nima sensor has had an issue with the capsule being tested. Confirm that 1.) The capsule was not used for a previous test 2.) The expiration date has not passed 3.) There is nothing inside the Nima sensor that may be obstructing the inside of the front window – use a clean cloth to wipe the inside of Nima as well as the outside of the capsule. If all conditions are met, re-run capsule. If an error still occurs, run a new test with a new capsule.

Best Practices for Use

  • Leave capsules wrapped until you are ready to use them.
  • Store capsules in a temperate environment. Ongoing exposure to extreme heat and cold will damage the integrity of the test. Capsules should not be exposed to heat above 90 degrees Fahrenheit (32 degrees Celsius) or below 32 degrees Fahrenheit (Zero degrees Celsius) for prolonged periods of time. Do not regularly store capsules in a hot car or freezer.
  • Wash hands before testing to help avoid cross contamination.
  • Wipe outside of capsule clean of excess food and liquid before placing in Nima.
  • Use a fresh capsule for every test. Reusing a capsule will result in an error.
  • For best results (and avoiding test failures) you may need to crush, chop, or shred your food samples.
  • Do not ingest test liquid or consume food sample from capsule after testing.
  • Do not re-open the capsule after use. Throw capsule away. Not currently recyclable.
  • Wash hands with soap if you come in contact with testing fluid.

Other Nima Display Icons

Nima Manual: Nima Logo shown on device with push to start

Nima logo: Push to Start

Powering on screen. This will only display for 15 seconds. A quick press will start the test. If no tests are being run, Nima will automatically turn off. Don’t worry, there is no need to turn Nima off as this will happen automatically.

Nima Manual: Bluetooth symbol shows device is ready to pair

Bluetooth Symbol: Ready to Pair

Signals Nima is ready to be paired with your Bluetooth enabled mobile device. To reset your Bluetooth and have your Nima in pairing mode, from power off, press and hold the Nima button for 5 seconds.

Nima Manual: Push to start

Push to Start

Push the button to turn Nima on, then push button one more time to start a test. Capsule must be fully inserted.

Running a Test

Nima is running a test. This icon indicates something is happening. Might be accompanied by a noise – this means Nima is processing your food. There is a progress bar to indicate how far into the test you are.

Nima Manual: Arrow and text Stand Up means to place Nima upright

Stand Up

Place Nima upright on a flat surface when running a test. Too much movement of Nima during testing may cause a failure.

Nima Manual: Nima doesn't see a capsule. Insert one to start a test.

Insert Capsule

Nima does not recognize or detect a capsule to test. Confirm the capsule top is fully closed. If it’s not, the capsule will not click into place. A fully closed capsule shows no purple ring and the cap should be flush with the body. Confirm the capsule is fully inserted into Nima. You should feel it click when it’s properly inserted.

Tighten Capsule

This result will display on Nima when the capsule top does not appear to be fully closed and flush. If you see this message, remove the capsule and try to further tighten the cap. The last few millimeters can be difficult – especially if the capsule has been overfilled or if the food is especially dense. The purple ring should not be visible and the top of the capsule should be flush with the body. Once the cap is closed and aligned, re-insert the capsule and try to run the test again.

Nima Manual: Battery with slash means low battery and Nima needs to be charged.

Low Battery

Battery needs to be charged. See the “Battery” section under “Maintenance” for more information on battery life.

Maintenance

Cleaning

Both the inside and outside of the sensor can be cleaned with a damp cloth. At no time should Nima be rinsed or submerged under or in water. Don’t get moisture in any openings or use aerosol sprays, solvents, or abrasives.

Battery life

Nima arrives charged. On average, battery charge lasts around 40 tests. Battery will last around 3 months if no tests are being run and Nima is off. Device will turn off automatically if not being used. From a completely dead battery, Nima will take 1 hour and 15 minutes to fully charge. The Nima is charged via the USB micro connector. You can plug the Nima to any USB 1.0 or 2.0 micro charger or directly into a USB port on your computer. The Nima is compliant to USB 1.0 and 2.0 current limitations and will not draw more than 300mA of current at its maximum charge rate.

If Nima’s battery runs out during a test, you will be unable to remove the capsule until Nima is once again charged. Once charged, you will need to push the button to complete the test prior to being able to remove the capsule.

Storage temperature

Sensor and capsules should be stored in a temperate environment. Heat above 90 degrees Fahrenheit can cause damage. Don’t expose your Nima to extreme heat or cold. To avoid potential issues, do not store in a vehicle during hot or cold temperatures.

Durability

Handle Nima with care. Nima contains sensitive electronic components, including a battery, and can be damaged or cause injury if dropped, burned, bent, crushed, or if it comes in contact with liquid. Do not use a damaged Nima.

Additional Information

Did you receive Nima as a gift?

Please contact us to ensure we have your email address so you will receive all our email tips and tricks for new device owners as well as our weekly community. If you have additional questions about Nima or how it works, please visit our support center.

Want to learn more about the science behind Nima?

Please visit our science page.

For Our Customers in Canada

Industry Canada Disclaimer

This device complies with Industry Canada Licence-exempt RSSs. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout brouillage radioé lectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

Industry Canada E-label Instructions

To access the electronic e-label: From an off-position press and hold the front button for 5 seconds.

The “Ready To Pair” screen will be displayed which will be followed by the IC registration number and the model name [PMN] and number [HVIN].