Abstract: Disclosed is an apparatus for measuring turbidity, which includes a body case and includes a light source device, a light path absorption cell, a light path reception and detection module, a screen and a central processing unit, all of which are disposed on the body case. Spectrum of the light ray emitted by the light source device mainly has wavelengths in a range of 350 nm to 1000 nm. The spectrum has two peak wavelengths, one of which is in a range of 400 nm to 500 nm and has a half-peak width in a range of 5 nm to 50 nm, and the other of which is in a range of 550 nm to 750 nm and has a half-peak width in a range of 50 nm to 150 nm. Also disclosed is a method for rapidly measuring turbidity. By means of the present invention, turbidity of water sample can be measured accurately, simply, steadily and in high sensitivity.

Abstract: Disclosed is an apparatus for measuring turbidity, which includes a body case and includes a light source device, a light path absorption cell, a light path reception and detection module, a screen and a central processing unit, all of which are disposed on the body case. Spectrum of the light ray emitted by the light source device mainly has wavelengths in a range of 350 nm to 1000 nm. The spectrum has two peak wavelengths, one of which is in a range of 400 nm to 500 nm and has a half-peak width in a range of 5 nm to 50 nm, and the other of which is in a range of 550 nm to 750 nm and has a half-peak width in a range of 50 nm to 150 nm. Also disclosed is a method for rapidly measuring turbidity. By means of the present invention, turbidity of water sample can be measured accurately, simply, steadily and in high sensitivity.

Abstract: A porous tantalum used for medical implantation is provided, which includes a foam structure with three-dimensional interconnecting pores and produced by: mixing a solution made by organic binder and dispersant and tantalum powder to form tantalum slurry, casting the tantalum slurry into a organic foam body through impregnation until the pores of the organic foam body are filled, drying the impregnated organic foam body with the tantalum slurry to remove the dispersant, degreasing the dried organic foam body to separate the organic binder and the organic foam body from the dried tantalum slurry in a protective environment of inert gas, vacuum sintering the dried tantalum slurry to obtain a porous sintered body, and vacuum annealing then treating the porous sintered body with normal post-treatments to obtain the porous tantalum. Accordingly, the porous tantalum has well-distributed interconnecting pores and sintering neck structures resulting in good mechanical properties, and especially good ductility.