{"id":"657c5ded-92db-4ef5-a9fd-730253997758","created_at":"2025-09-05T01:16:32.358Z","updated_at":"2026-02-10T15:20:49.805Z","owner_id":"53b9bdc7-d072-48cb-b9fc-d63d86808c95","location_id":"34b15a62-cc4a-4f96-963c-2c6cb06c3962","dataset_id":"c2aca479-5e0c-46c7-aab5-595d1e6098be","form_id":"9b91f1bb-bde8-4b56-b5a4-408af73c2f91","observed_at":"2022-08-27T14:30:00.000Z","observed_at_local":"2022-08-27T10:30:00-04:00","notes":"Nitrate by titration between 2.5 and 5 ppm. Increase from previous reading. Not a trustworthy reading because of difficulty reading colour card. Will monitor.\r\nHydrogen Sulphide reading was 0.0.\r\nNoted was slightly more algae suspended in the water.\r\nTurbidity not electronically measured at this time due to continued development of the home made Nephelometer. I have developed a cubic quadratic equation for relating sensor output voltage to % of sensor detection range. The units in that range relate linearly to the actual NTU. 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