Atago的主折射仪系列是日本的盐度测量工具的高性能线。最近，我们在巴厘岛水族馆水监测实验室与Atago Master-S/毫米折光仪进行了一些动手时光，看到一个精细制作的盐米，这不仅仅是另一个水族馆公司Rebadge，这真是令人耳目一新。
Before we tell you about the aquarium suitable models, it’s important to note that Atago makes a bewildering array of salinity measuring devices, from digital meters, to portable pens, traditional hand held refrcatometers and even in-line refractometers. Atago’s measuring tools are used to measure the salinity, specific gravity and refractive index for everything from blood to protein, soy sauces to urine, and of course the more mundane saltwater (brine) and seawater solutions.
When you do one thing and you do it well, it shows and this is particularly clear in the Master-S/MillM refractometer from Atago. When we first handled the Atago MillM it seemed very lightweight but a little more gripping and poking at the device revealed a very solid build quality.
The Atago refractometer has a very similar shape to traditional refractometers but it has a much larger refractive glass. This larger refractive surface translates into one of the clearest and sharpest readings we’ve ever seen through a refractometer with each level of PPT clearly visible in the viewfinder.
The MillM model in the Master S series is the manual version of seawater measurement which is calibrated for 20C/68F so users will have to refer to the included calibration chart to adjust their observed readings. The Mill-alpha refractometer is the refractometer model that automatically compensates for temperature so what you see in the viewer is the precise salinity of your seawater. This higher end Mill-Alpha refractometer also has a resolution of 0.5 PPT.
All of this high level refractometer action doesn’t come cheap with the Master-S/MillM refractometer retailing around $208 and the auto temperature compensating Mill-Alpha selling for just under $250. This is how much refractometers用过的付出了代价，但是礁石业余爱好的兴起将成本降低到了消费者的价格水平，但是我们不得不想知道做出了什么妥协，以使某些最便宜的车型的价格降至40美元。
由于其目录中的众多型号，如果Atago制作了其主折射仪系列的海洋水族馆特异性模型，一个具有自动温度补偿，25c/77f的校准，并且限制为0到0，那将是一个潮湿的梦想。40 ppt。If that day ever came and the Atago ‘Mill-Aquarium’ model ever came true, and turned out to be an reliable tool for measuring salinity, we would gladly pay $200 for a really accurate measurement of the most important parameter of our reef aquarium water. [Atago]
