开缸日记(会很漫长)耐心看吧(6月21日sps开缸306天）

=将进酒=

这个可是非常关键的事情了，
但是对此我也有质疑。
为何HANNA官网和目前所了解的不一致？
我 ...
不太想聊天 发表于 2011-9-19 22:47

我想是不是只有海水才会有大量的钙能被检测出来，而淡水很微量，po4  kh  no3却是淡  海水共有的呐？

宋日月

我买hanna的po4时，是看到了中央7台科技下乡搞扇贝养殖，中科院的科技人员拿着个白盒在那测磷酸盐，我 ...
=将进酒= 发表于 2011-9-20 00:01

   王哥,昨天我妹给美国客服打电话,美国说可以测试,推荐用型号HI713  和型号 HI736,底分辨率模式的测试机,但很有意思的是有的是测磷含量,有的是测试磷酸盐含量.选择哪种我还得问问,还有中国官方客服说准备问一下意大利的生产商,我提出的问题.请继续等待吧.

    你买的那机器论坛好象有报价,不到2000元,淘宝一搜索才1800,还能讲价,谁卖你3000这价格.真坑爹啊!

宋日月

我想是不是只有海水才会有大量的钙能被检测出来，而淡水很微量，po4  kh  no3却是淡  海水共有的呐？
=将进酒= 发表于 2011-9-20 00:11

   另外发现了一个细节,就是聊天所提示的在这测试机上有个英文单词marine(海产的意思)附加一个鱼的图案，有的机器印了，有的机器没印，我个人感觉还是有一定差别的.好多技术性的问题,还需要我们大家共同分析研究,才能做到运筹帷幄.

所有的蛋蛋都在这个地址:http://www.hannainst.cn/category/541=1320-0-0.aspx?view=0     大家可以看看有的就没有这个单词和图案有的就有.

宋日月

我买hanna的po4时，是看到了中央7台科技下乡搞扇贝养殖，中科院的科技人员拿着个白盒在那测磷酸盐，我 ...
=将进酒= 发表于 2011-9-20 00:01

    美国客服的回信全文

大概意思是说,可以测试海水,有好多海水论坛上的人都在使用,如果你想测试比较低的读数,建议使用型号:HI736(磷（P）浓度测定仪 )   然后乘以0.003  得到读数
中国是这么乘：[PO43-] = [P] x 3.065

You can use them on saltwater. In fact there is a forum called Reef Central and thee are many people using them.
If you are expecting very low readings I would suggest you go with the HI736 model (measure Phosphorus) then just multiply the reading by .003 to get PO4.
Here is some info on each meter.
The HI713 meters accuracy is +/-.04 + +/-4% of reading.

For example:

0ppm the accuracy is +/-.04

1ppm the accuracy is +/-.08

2ppm the accuracy is +/-.12

If you are looking for a more precise measurement you should consider using the HI736 Phosphorus Ultra Low Range meter.

This meter +/-5ppb + +/-5% of reading

This meters range is from 0 to 200 ppb (.20ppm) of Phosphorus. You would just have to do some conversion to get the reading into ppm of PO4.

To convert the phosphorus (P) reading on this meter in to phosphate (PO4) you would have to multiply by .003

For example:

Meter reads:

10ppb of P = .03ppm PO4

100ppb = .30ppm PO4

200ppb = .60ppm PO4



Regards,

Pete

-----Original Message-----
From: Melody Yue Yin [mailto]
Sent: September 19, 2011 11:47 AM
To: Hanna Tech Service
Subject: Re: phosphate photometer


thanks, Pete!


My friends asked the Hanna technical support in China, but their answer is the phosphate photometers are only used for industrial waste water. We are just worried about maybe it's not appropriate for marine water test. Are you sure the seawater will not effect the test result of the phosphate concentration?


Thank you very much!
Melody



On Mon, Sep 19, 2011 at 11:32 AM, Hanna Tech Service <tech@hannainst.com> wrote:

Melogy,

You would probably want the HI96713 low range model.

We also have the HI713 or HI736 which would work too.

Regards,
Pete

-----Original Message-----
From: Melody [mailto:]
Sent: September 19, 2011 10:27 AM
To: tech@hannainst.com; rsilva@hannainst.com
Subject: phosphate photometer


Live Support Message Delivery:
-------------------------------------------

Hi,
I am considering to purchase a phosphate photometer to measure the phosphate
in my aquarium (seawater). I'm not sure whether the HI 96717 or HI96713 can
be used to test seawater. Thank you very much!

红尾猫

虽然看得有些迷糊，但还是感谢宋哥为我们做的这些

小小弧

最好有种仪器，滴一滴海水，哒哒哒，钙，镁，磷，PH，KH，Cu都出来了。我是学机械的，金属材质里有这种设备，放一点金属样件，设备把金属气化，然后用CCD摄像的方便记录蒸发的各种化学成分的光谱，大概这么个原理。要是海水也能这样就好了。哪怕贵点也无所谓，机器放在谁家里，大家自带水样去测试，每次测试给点钱，就像拍证件照一样。哈哈

baron_lu

越来越专业了，佩服

雪碧

你好及时雨宋哥哥 小弟也对哈纳仪器情有独钟 图中是HI96750钾离子测试仪在各元素测试范围内标准 在此范围内测试不影响测试结果

我经常把缸水用蒸馏水稀释50倍后测试 理论上说是可行的 而且咨询过哈纳中国总代工程师也说可行 并说误差在接受范围内

但感觉没有说服力 毕竟没有先例可纳

所以小弟恳请宋哥哥让您妹妹在国外问下HI96750测试海水的准确性 感谢！

宋日月

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