
FJD Hand Held Refractometer Air
Digital Brix Refractometer, Brix Refractometer, FJDynamics
FJD Hand Held Refractometer Air launched on September 28, 2022 with 2 votes, #1,731 of 3,464 launches that month.
What it does
Refractometers measure, with only a few drops of solution, a wide range of readings. They include the urine-specific gravity, the sugar concentration of fruit juice, the sugar content of a soft drink, coffee TDS, and so on.
Does a similar job
all alternatives →
- ALAir Lab – A portable and open air quality measuring device2025 · networkedartifacts.com · ▲497
Hi HN! I’ve been working on an air quality measuring device called Air Lab for the past three years. It measures CO2, temperature, relative humidity, air pollutants (VOC, NOx), and atmospheric pressure. You can log and analyze the data directly on the device — no smartphone or laptop needed. To better show what the device can do and how it feels like, I spent the past week developing a web-based simulator using Emscripten. It runs the stock firmware with most features available except for networking. Check it out and let me know what you think! The firmware will be open-source and available…
- AAAn attempt to measure fermentation activity from the sound of bubbles2017 · anfractuosity.com · ▲27
Decibel Meter Ultra2024 · decibelmeterultra.com · ▲158All-in-one sound level meter, dosimeter & frequency analyzer


More work this month
the category →
Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.
Work · 27d ago · loficities.com
Smooth Recorder▲257Mac screen recordings that look edited when you hit stop
Work · 21d ago · smoothrecorder.com


Work · 15d ago · readrare.com
Source: Product Hunt launch ↗
Launched alongside, September 2022
the whole month →- IM
Life & fun · 2022 · dogbunnypuzzle.com

A couple of years ago, I had an interesting idea. What if there was a marketplace where all the underlying tech was open-source? The order management system, the storefront, customer support, etc. The marketplace would simply connect to the seller’s infra instead of locking them in. If, for some reason, the seller is removed from the marketplace, their software stays with them and they can continue accepting orders directly. This model can be used to disrupt any marketplace from AirBNB to UberEats: building tech for home renters and restaurants and later, leveraging that to build a competing…
Dev tools · 2022 · openship.org



